Merging master (#3)

* REDESIGNED input system for better mouse/touch support

* Update Makefile

* Reviewed IsMouseButtonDown()

* Added comment on IsMouseButtonDown() issue

IsMouseButtonDown() does not process touch state down properly, state is reseted every frame...

* Update textures_mouse_painting.c

* Update raymath.h (#1118)

* Update raymath.h

Added Vector2Rotate Function.

* Update raymath.h

* Support touch drawing on web

* Review some comment

* Review shader exaples to work on web (GLSL 100)

* Support any mouse button for gesture detection

* Some code tweaks

* REVIEWED: Mouse/Touch input system

After several reviews, now it seems everything works as expected.

* Avoid icons in shell

Very weird... lately icons are not properly displayed on browser!

* Update core.c

* WARNING: Corrected issue with IsKeyDown() #1119

* ADDED: LoadFileText() and SaveFileText()

Improved file access checks

Co-authored-by: Ray <raysan5@gmail.com>
Co-authored-by: i-right-i <olmstead.ben@gmail.com>

examples/Makefile

@@ -118,7 +118,7 @@ ifeq ($(PLATFORM),PLATFORM_WEB)
     EMSDK_PATH         ?= C:/emsdk
     EMSCRIPTEN_PATH    ?= $(EMSDK_PATH)/upstream/emscripten
     CLANG_PATH          = $(EMSDK_PATH)/upstream/bin
-    PYTHON_PATH         = $(EMSDK_PATH)/python/2.7.13.1_64bit/python-2.7.13.amd64
+    PYTHON_PATH         = $(EMSDK_PATH)/python/3.7.4_64bit
     NODE_PATH           = $(EMSDK_PATH)/node/12.9.1_64bit/bin
     export PATH         = $(EMSDK_PATH);$(EMSCRIPTEN_PATH);$(CLANG_PATH);$(NODE_PATH);$(PYTHON_PATH);C:\raylib\MinGW\bin:$$(PATH)
 endif

examples/models/resources/shaders/glsl330/irradiance.fs

@@ -15,7 +15,7 @@ in vec3 fragPosition;
 uniform samplerCube environmentMap;
 
 // Constant values
-const float PI = 3.14159265359f;
+const float PI = 3.14159265359;
 
 // Output fragment color
 out vec4 finalColor;
@@ -31,8 +31,8 @@ void main()
     vec3 right = cross(up, normal);
     up = cross(normal, right);
 
-    float sampleDelta = 0.025f;
-    float nrSamples = 0.0f; 
+    float sampleDelta = 0.025;
+    float nrSamples = 0.0; 
 
     for (float phi = 0.0; phi < 2.0*PI; phi += sampleDelta)
     {

examples/models/resources/shaders/glsl330/pbr.vs

@@ -34,7 +34,7 @@ void main()
     mat3 normalMatrix = transpose(inverse(mat3(matModel)));
 
     // Calculate fragment position based on model transformations
-    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
 
     // Send vertex attributes to fragment shader
     fragTexCoord = vertexTexCoord;

examples/models/resources/shaders/glsl330/prefilter.fs

@@ -18,7 +18,7 @@ uniform samplerCube environmentMap;
 uniform float roughness;
 
 // Constant values
-const float PI = 3.14159265359f;
+const float PI = 3.14159265359;
 
 // Output fragment color
 out vec4 finalColor;

examples/shaders/resources/shaders/glsl100/base.fs

@@ -11,7 +11,6 @@ uniform sampler2D texture0;
 uniform vec4 colDiffuse;
 
 // NOTE: Add here your custom variables
-uniform vec2 resolution = vec2(800, 450);
 
 void main()
 {

examples/shaders/resources/shaders/glsl100/base_lighting.vs

@@ -0,0 +1,59 @@
+#version 100
+
+// Input vertex attributes
+attribute vec3 vertexPosition;
+attribute vec2 vertexTexCoord;
+attribute vec3 vertexNormal;
+attribute vec4 vertexColor;
+
+// Input uniform values
+uniform mat4 mvp;
+uniform mat4 matModel;
+
+// Output vertex attributes (to fragment shader)
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+varying vec3 fragNormal;
+
+// NOTE: Add here your custom variables
+
+// https://github.com/glslify/glsl-inverse
+mat3 inverse(mat3 m)
+{
+  float a00 = m[0][0], a01 = m[0][1], a02 = m[0][2];
+  float a10 = m[1][0], a11 = m[1][1], a12 = m[1][2];
+  float a20 = m[2][0], a21 = m[2][1], a22 = m[2][2];
+
+  float b01 = a22*a11 - a12*a21;
+  float b11 = -a22*a10 + a12*a20;
+  float b21 = a21*a10 - a11*a20;
+
+  float det = a00*b01 + a01*b11 + a02*b21;
+
+  return mat3(b01, (-a22*a01 + a02*a21), (a12*a01 - a02*a11),
+              b11, (a22*a00 - a02*a20), (-a12*a00 + a02*a10),
+              b21, (-a21*a00 + a01*a20), (a11*a00 - a01*a10))/det;
+}
+
+// https://github.com/glslify/glsl-transpose
+mat3 transpose(mat3 m)
+{
+  return mat3(m[0][0], m[1][0], m[2][0],
+              m[0][1], m[1][1], m[2][1],
+              m[0][2], m[1][2], m[2][2]);
+}
+
+void main()
+{
+    // Send vertex attributes to fragment shader
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
+    fragTexCoord = vertexTexCoord;
+    fragColor = vertexColor;
+
+    mat3 normalMatrix = transpose(inverse(mat3(matModel)));
+    fragNormal = normalize(normalMatrix*vertexNormal);
+
+    // Calculate final vertex position
+    gl_Position = mvp*vec4(vertexPosition, 1.0);
+}

examples/shaders/resources/shaders/glsl100/fog.fs

@@ -0,0 +1,94 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+varying vec3 fragNormal;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+#define     MAX_LIGHTS              4
+#define     LIGHT_DIRECTIONAL       0
+#define     LIGHT_POINT             1
+
+struct MaterialProperty {
+    vec3 color;
+    int useSampler;
+    sampler2D sampler;
+};
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+};
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec4 ambient;
+uniform vec3 viewPos;
+uniform float fogDensity;
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord);
+    vec3 lightDot = vec3(0.0);
+    vec3 normal = normalize(fragNormal);
+    vec3 viewD = normalize(viewPos - fragPosition);
+    vec3 specular = vec3(0.0);
+
+    // NOTE: Implement here your fragment shader code
+
+    for (int i = 0; i < MAX_LIGHTS; i++)
+    {
+        if (lights[i].enabled == 1)
+        {
+            vec3 light = vec3(0.0);
+            
+            if (lights[i].type == LIGHT_DIRECTIONAL) light = -normalize(lights[i].target - lights[i].position);
+            if (lights[i].type == LIGHT_POINT) light = normalize(lights[i].position - fragPosition);
+
+            float NdotL = max(dot(normal, light), 0.0);
+            lightDot += lights[i].color.rgb*NdotL;
+
+            float specCo = 0.0;
+            if (NdotL > 0.0) specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16.0); // Shine: 16.0
+            specular += specCo;
+        }
+    }
+
+    vec4 finalColor = (texelColor*((colDiffuse + vec4(specular,1))*vec4(lightDot, 1.0)));
+    finalColor += texelColor*(ambient/10.0);
+    
+    // Gamma correction
+    finalColor = pow(finalColor, vec4(1.0/2.2));
+    
+    // Fog calculation
+    float dist = length(viewPos - fragPosition);
+
+    // these could be parameters...
+    const vec4 fogColor = vec4(0.5, 0.5, 0.5, 1.0);
+    //const float fogDensity = 0.16;
+
+    // Exponential fog
+    float fogFactor = 1.0/exp((dist*fogDensity)*(dist*fogDensity));
+
+    // Linear fog (less nice)
+    //const float fogStart = 2.0;
+    //const float fogEnd = 10.0;
+    //float fogFactor = (fogEnd - dist)/(fogEnd - fogStart);
+
+    fogFactor = clamp(fogFactor, 0.0, 1.0);
+
+    gl_FragColor = mix(fogColor, finalColor, fogFactor);
+}

examples/shaders/resources/shaders/glsl100/lighting.fs

@@ -0,0 +1,81 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec3 fragPosition;
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+varying vec3 fragNormal;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform vec4 colDiffuse;
+
+// NOTE: Add here your custom variables
+
+#define     MAX_LIGHTS              4
+#define     LIGHT_DIRECTIONAL       0
+#define     LIGHT_POINT             1
+
+struct MaterialProperty {
+    vec3 color;
+    int useSampler;
+    sampler2D sampler;
+};
+
+struct Light {
+    int enabled;
+    int type;
+    vec3 position;
+    vec3 target;
+    vec4 color;
+};
+
+// Input lighting values
+uniform Light lights[MAX_LIGHTS];
+uniform vec4 ambient;
+uniform vec3 viewPos;
+
+void main()
+{
+    // Texel color fetching from texture sampler
+    vec4 texelColor = texture2D(texture0, fragTexCoord);
+    vec3 lightDot = vec3(0.0);
+    vec3 normal = normalize(fragNormal);
+    vec3 viewD = normalize(viewPos - fragPosition);
+    vec3 specular = vec3(0.0);
+
+    // NOTE: Implement here your fragment shader code
+
+    for (int i = 0; i < MAX_LIGHTS; i++)
+    {
+        if (lights[i].enabled == 1)
+        {
+            vec3 light = vec3(0.0);
+            
+            if (lights[i].type == LIGHT_DIRECTIONAL) 
+            {
+                light = -normalize(lights[i].target - lights[i].position);
+            }
+            
+            if (lights[i].type == LIGHT_POINT) 
+            {
+                light = normalize(lights[i].position - fragPosition);
+            }
+            
+            float NdotL = max(dot(normal, light), 0.0);
+            lightDot += lights[i].color.rgb*NdotL;
+
+            float specCo = 0.0;
+            if (NdotL > 0.0) specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16.0); // 16 refers to shine
+            specular += specCo;
+        }
+    }
+
+    vec4 finalColor = (texelColor*((colDiffuse + vec4(specular, 1.0))*vec4(lightDot, 1.0)));
+    finalColor += texelColor*(ambient/10.0);
+    
+    // Gamma correction
+    gl_FragColor = pow(finalColor, vec4(1.0/2.2));
+}

examples/shaders/resources/shaders/glsl100/mask.fs

@@ -0,0 +1,24 @@
+#version 100
+
+precision mediump float;
+
+// Input vertex attributes (from vertex shader)
+varying vec2 fragTexCoord;
+varying vec4 fragColor;
+
+// Input uniform values
+uniform sampler2D texture0;
+uniform sampler2D mask;
+uniform vec4 colDiffuse;
+uniform int frame;
+
+// NOTE: Add here your custom variables
+
+void main()
+{
+    vec4 maskColour = texture2D(mask, fragTexCoord + vec2(sin(-float(frame)/150.0)/10.0, cos(-float(frame)/170.0)/10.0));
+    if (maskColour.r < 0.25) discard;
+    vec4 texelColor = texture2D(texture0, fragTexCoord + vec2(sin(float(frame)/90.0)/8.0, cos(float(frame)/60.0)/8.0));
+
+    gl_FragColor = texelColor*maskColour;
+}

examples/shaders/resources/shaders/glsl330/base_lighting.vs

@@ -21,7 +21,7 @@ out vec3 fragNormal;
 void main()
 {
     // Send vertex attributes to fragment shader
-    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
+    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0));
     fragTexCoord = vertexTexCoord;
     fragColor = vertexColor;
     

examples/shaders/resources/shaders/glsl330/fog.fs

@@ -55,20 +55,16 @@ void main()
         if (lights[i].enabled == 1)
         {
             vec3 light = vec3(0.0);
-            if (lights[i].type == LIGHT_DIRECTIONAL) {
-                light = -normalize(lights[i].target - lights[i].position);
-            }
-            if (lights[i].type == LIGHT_POINT) {
-                light = normalize(lights[i].position - fragPosition);
-            }
+            
+            if (lights[i].type == LIGHT_DIRECTIONAL) light = -normalize(lights[i].target - lights[i].position);
+            if (lights[i].type == LIGHT_POINT) light = normalize(lights[i].position - fragPosition);
+
             float NdotL = max(dot(normal, light), 0.0);
             lightDot += lights[i].color.rgb*NdotL;
 
             float specCo = 0.0;
-            if(NdotL > 0.0)
-                specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16);//16 =shine
+            if (NdotL > 0.0) specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16.0); // Shine: 16.0
             specular += specCo;
-
         }
     }
 

examples/shaders/resources/shaders/glsl330/fog.vs

@@ -1,32 +0,0 @@
-#version 330
-
-// Input vertex attributes
-in vec3 vertexPosition;
-in vec2 vertexTexCoord;
-in vec3 vertexNormal;
-in vec4 vertexColor;
-
-// Input uniform values
-uniform mat4 mvp;
-uniform mat4 matModel;
-
-// Output vertex attributes (to fragment shader)
-out vec2 fragTexCoord;
-out vec4 fragColor;
-out vec3 fragPosition;
-out vec3 fragNormal;
-
-// NOTE: Add here your custom variables
-
-void main()
-{
-    // Send vertex attributes to fragment shader
-    fragTexCoord = vertexTexCoord;
-    fragColor = vertexColor;
-    fragPosition = vec3(matModel*vec4(vertexPosition, 1.0f));
-    mat3 normalMatrix = transpose(inverse(mat3(matModel)));
-    fragNormal = normalize(normalMatrix*vertexNormal);
-
-    // Calculate final vertex position
-    gl_Position = mvp*vec4(vertexPosition, 1.0);
-}

examples/shaders/resources/shaders/glsl330/lighting.fs

@@ -69,7 +69,7 @@ void main()
             lightDot += lights[i].color.rgb*NdotL;
 
             float specCo = 0.0;
-            if (NdotL > 0.0) specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16); // 16 refers to shine
+            if (NdotL > 0.0) specCo = pow(max(0.0, dot(viewD, reflect(-(light), normal))), 16.0); // 16 refers to shine
             specular += specCo;
         }
     }

examples/shaders/resources/shaders/glsl330/mask.fs

@@ -2,6 +2,7 @@
 
 // Input vertex attributes (from vertex shader)
 in vec2 fragTexCoord;
+in vec4 fragColor;
 
 // Input uniform values
 uniform sampler2D texture0;

examples/shaders/resources/shaders/glsl330/mask.vs

@@ -1,21 +0,0 @@
-#version 330
-
-// Input vertex attributes
-in vec3 vertexPosition;
-in vec2 vertexTexCoord;
-
-// Input uniform values
-uniform mat4 mvp;
-uniform mat4 matModel;
-
-// Output vertex attributes (to fragment shader)
-out vec2 fragTexCoord;
-
-void main()
-{
-    // Send vertex attributes to fragment shader
-    fragTexCoord = vertexTexCoord;
-
-    // Calculate final vertex position
-    gl_Position = mvp*vec4(vertexPosition, 1.0);
-}

examples/shaders/rlights.h

@@ -68,17 +68,11 @@ typedef enum {
 extern "C" {            // Prevents name mangling of functions
 #endif
 
-//----------------------------------------------------------------------------------
-// Global Variables Definition
-//----------------------------------------------------------------------------------
-int lightsCount = 0;    // Current amount of created lights
-
 //----------------------------------------------------------------------------------
 // Module Functions Declaration
 //----------------------------------------------------------------------------------
 Light CreateLight(int type, Vector3 position, Vector3 target, Color color, Shader shader);   // Create a light and get shader locations
 void UpdateLightValues(Shader shader, Light light);         // Send light properties to shader
-//void InitLightLocations(Shader shader, Light *light);     // Init light shader locations
 
 #ifdef __cplusplus
 }
@@ -110,7 +104,7 @@ void UpdateLightValues(Shader shader, Light light);         // Send light proper
 //----------------------------------------------------------------------------------
 // Global Variables Definition
 //----------------------------------------------------------------------------------
-// ...
+static int lightsCount = 0;    // Current amount of created lights
 
 //----------------------------------------------------------------------------------
 // Module specific Functions Declaration
@@ -142,6 +136,8 @@ Light CreateLight(int type, Vector3 position, Vector3 target, Color color, Shade
         char posName[32] = "lights[x].position\0";
         char targetName[32] = "lights[x].target\0";
         char colorName[32] = "lights[x].color\0";
+        
+        // Set location name [x] depending on lights count
         enabledName[7] = '0' + lightsCount;
         typeName[7] = '0' + lightsCount;
         posName[7] = '0' + lightsCount;

examples/shaders/shaders_basic_lighting.c

@@ -69,8 +69,8 @@ int main(void)
     modelB.materials[0].maps[MAP_DIFFUSE].texture = texture;
     modelC.materials[0].maps[MAP_DIFFUSE].texture = texture;
 
-    Shader shader = LoadShader("resources/shaders/glsl330/basic_lighting.vs", 
-                               "resources/shaders/glsl330/basic_lighting.fs");
+    Shader shader = LoadShader(FormatText("resources/shaders/glsl%i/base_lighting.vs", GLSL_VERSION), 
+                               FormatText("resources/shaders/glsl%i/lighting.fs", GLSL_VERSION));
     
     // Get some shader loactions
     shader.locs[LOC_MATRIX_MODEL] = GetShaderLocation(shader, "matModel");
@@ -112,7 +112,7 @@ int main(void)
         UpdateCamera(&camera);              // Update camera
 
         // Make the lights do differing orbits
-        angle -= 0.02;
+        angle -= 0.02f;
         lights[0].position.x = cosf(angle)*4.0f;
         lights[0].position.z = sinf(angle)*4.0f;
         lights[1].position.x = cosf(-angle*0.6f)*4.0f;
@@ -128,8 +128,8 @@ int main(void)
         UpdateLightValues(shader, lights[3]);
 
         // Rotate the torus
-        modelA.transform = MatrixMultiply(modelA.transform, MatrixRotateX(-0.025));
-        modelA.transform = MatrixMultiply(modelA.transform, MatrixRotateZ(0.012));
+        modelA.transform = MatrixMultiply(modelA.transform, MatrixRotateX(-0.025f));
+        modelA.transform = MatrixMultiply(modelA.transform, MatrixRotateZ(0.012f));
 
         // Update the light shader with the camera view position
         float cameraPos[3] = { camera.position.x, camera.position.y, camera.position.z };
@@ -161,7 +161,7 @@ int main(void)
 
             DrawFPS(10, 10);
             
-            DrawText("Keys RGB & W toggle lights", 10, 30, 20, DARKGRAY);
+            DrawText("Use keys RGBW to toggle lights", 10, 30, 20, DARKGRAY);
 
         EndDrawing();
         //----------------------------------------------------------------------------------

examples/shaders/shaders_fog.c

@@ -32,6 +32,12 @@
 #define RLIGHTS_IMPLEMENTATION
 #include "rlights.h"
 
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
 int main(void)
 {
     // Initialization
@@ -61,7 +67,8 @@ int main(void)
     modelC.materials[0].maps[MAP_DIFFUSE].texture = texture;
 
     // Load shader and set up some uniforms
-    Shader shader = LoadShader("resources/shaders/glsl330/fog.vs", "resources/shaders/glsl330/fog.fs");
+    Shader shader = LoadShader(FormatText("resources/shaders/glsl%i/base_lighting.vs", GLSL_VERSION), 
+                               FormatText("resources/shaders/glsl%i/fog.fs", GLSL_VERSION));
     shader.locs[LOC_MATRIX_MODEL] = GetShaderLocation(shader, "matModel");
     shader.locs[LOC_VECTOR_VIEW] = GetShaderLocation(shader, "viewPos");
 

examples/shaders/shaders_simple_mask.c

@@ -21,6 +21,12 @@
 #include "raylib.h"
 #include "raymath.h"
 
+#if defined(PLATFORM_DESKTOP)
+    #define GLSL_VERSION            330
+#else   // PLATFORM_RPI, PLATFORM_ANDROID, PLATFORM_WEB
+    #define GLSL_VERSION            100
+#endif
+
 int main(void)
 {
     // Initialization
@@ -50,7 +56,7 @@ int main(void)
     Model model3 = LoadModelFromMesh(sphere);
 
     // Load the shader
-    Shader shader = LoadShader("resources/shaders/glsl330/mask.vs", "resources/shaders/glsl330/mask.fs");
+    Shader shader = LoadShader(0, FormatText("resources/shaders/glsl%i/mask.fs", GLSL_VERSION));
     
     // Load and apply the diffuse texture (colour map)
     Texture texDiffuse = LoadTexture("resources/plasma.png");
@@ -66,7 +72,7 @@ int main(void)
     shader.locs[LOC_MAP_EMISSION] = GetShaderLocation(shader, "mask");
 
     // Frame is incremented each frame to animate the shader
-    int shaderFrame = GetShaderLocation(shader, "framesCounter");
+    int shaderFrame = GetShaderLocation(shader, "frame");
 
     // Apply the shader to the two models
     model1.materials[0].shader = shader;

examples/textures/textures_mouse_painting.c

@@ -106,7 +106,7 @@ int main(void)
             EndTextureMode();
         }
 
-        if (IsMouseButtonDown(MOUSE_LEFT_BUTTON))
+        if (IsMouseButtonDown(MOUSE_LEFT_BUTTON) || (GetGestureDetected() == GESTURE_DRAG))
         {
             // Paint circle into render texture
             // NOTE: To avoid discontinuous circles, we could store
@@ -166,7 +166,7 @@ int main(void)
             // Draw drawing circle for reference
             if (mousePos.y > 50) 
             {
-                if (IsMouseButtonDown(MOUSE_RIGHT_BUTTON)) DrawCircleLines(mousePos.x, mousePos.y, brushSize, colors[colorSelected]);
+                if (IsMouseButtonDown(MOUSE_RIGHT_BUTTON)) DrawCircleLines(mousePos.x, mousePos.y, brushSize, GRAY);
                 else DrawCircle(GetMouseX(), GetMouseY(), brushSize, colors[colorSelected]);
             }
             

src/core.c

@@ -398,18 +398,18 @@ typedef struct CoreData {
 #if defined(PLATFORM_WEB)
             bool cursorLockRequired;        // Ask for cursor pointer lock on next click
 #endif
-#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_RPI) || defined(PLATFORM_WEB) || defined(PLATFORM_UWP)
             char currentButtonState[3];     // Registers current mouse button state
             char previousButtonState[3];    // Registers previous mouse button state
             int currentWheelMove;           // Registers current mouse wheel variation
             int previousWheelMove;          // Registers previous mouse wheel variation
-#endif
 #if defined(PLATFORM_RPI)
             char currentButtonStateEvdev[3];    // Holds the new mouse state for the next polling event to grab (Can't be written directly due to multithreading, app could miss the update)
 #endif
         } Mouse;
         struct {
             Vector2 position[MAX_TOUCH_POINTS];         // Touch position on screen
+            char currentTouchState[MAX_TOUCH_POINTS];   // Registers current touch state
+            char previousTouchState[MAX_TOUCH_POINTS];  // Registers previous touch state
         } Touch;
         struct {
             int lastButtonPressed;          // Register last gamepad button pressed
@@ -445,7 +445,7 @@ typedef struct CoreData {
 //----------------------------------------------------------------------------------
 static CoreData CORE = { 0 };               // Global CORE context
 
-static char **dirFilesPath;                 // Store directory files paths as strings
+static char **dirFilesPath = NULL;          // Store directory files paths as strings
 static int dirFilesCount = 0;               // Count directory files strings
 
 #if defined(SUPPORT_SCREEN_CAPTURE)
@@ -477,8 +477,6 @@ static void SwapBuffers(void);                          // Copy back buffer to f
 static void InitTimer(void);                            // Initialize timer
 static void Wait(float ms);                             // Wait for some milliseconds (stop program execution)
 
-static bool GetKeyStatus(int key);                      // Returns if a key has been pressed
-static bool GetMouseButtonStatus(int button);           // Returns if a mouse button has been pressed
 static int GetGamepadButton(int button);                // Get gamepad button generic to all platforms
 static int GetGamepadAxis(int axis);                    // Get gamepad axis generic to all platforms
 static void PollInputEvents(void);                      // Register user events
@@ -1718,8 +1716,8 @@ Color ColorFromNormalized(Vector4 normalized)
 // NOTE: Hue is returned as degrees [0..360]
 Vector3 ColorToHSV(Color color)
 {
+    Vector3 hsv = { 0 };
     Vector3 rgb = { (float)color.r/255.0f, (float)color.g/255.0f, (float)color.b/255.0f };
-    Vector3 hsv = { 0.0f, 0.0f, 0.0f };
     float min, max, delta;
 
     min = rgb.x < rgb.y? rgb.x : rgb.y;
@@ -2306,7 +2304,7 @@ bool IsKeyPressed(int key)
 {
     bool pressed = false;
 
-    if ((CORE.Input.Keyboard.currentKeyState[key] != CORE.Input.Keyboard.previousKeyState[key]) && (CORE.Input.Keyboard.currentKeyState[key] == 1)) pressed = true;
+    if ((CORE.Input.Keyboard.previousKeyState[key] == 0) && (CORE.Input.Keyboard.currentKeyState[key] == 1)) pressed = true;
     else pressed = false;
 
     return pressed;
@@ -2315,7 +2313,7 @@ bool IsKeyPressed(int key)
 // Detect if a key is being pressed (key held down)
 bool IsKeyDown(int key)
 {
-    if (GetKeyStatus(key) == 1) return true;
+    if (CORE.Input.Keyboard.currentKeyState[key] == 1) return true;
     else return false;
 }
 
@@ -2324,7 +2322,7 @@ bool IsKeyReleased(int key)
 {
     bool released = false;
 
-    if ((CORE.Input.Keyboard.currentKeyState[key] != CORE.Input.Keyboard.previousKeyState[key]) && (CORE.Input.Keyboard.currentKeyState[key] == 0)) released = true;
+    if ((CORE.Input.Keyboard.previousKeyState[key] == 1) && (CORE.Input.Keyboard.currentKeyState[key] == 0)) released = true;
     else released = false;
 
     return released;
@@ -2333,7 +2331,7 @@ bool IsKeyReleased(int key)
 // Detect if a key is NOT being pressed (key not held down)
 bool IsKeyUp(int key)
 {
-    if (GetKeyStatus(key) == 0) return true;
+    if (CORE.Input.Keyboard.currentKeyState[key] == 0) return true;
     else return false;
 }
 
@@ -2502,9 +2500,10 @@ bool IsMouseButtonPressed(int button)
 #if defined(PLATFORM_ANDROID)
     if (IsGestureDetected(GESTURE_TAP)) pressed = true;
 #else
-    // NOTE: On PLATFORM_DESKTOP and PLATFORM_WEB IsMouseButtonPressed() is equivalent to GESTURE_TAP
-    if ((CORE.Input.Mouse.currentButtonState[button] != CORE.Input.Mouse.previousButtonState[button]) &&
-         (GetMouseButtonStatus(button) == 1)) pressed = true;
+    if ((CORE.Input.Mouse.currentButtonState[button] == 1) && (CORE.Input.Mouse.previousButtonState[button] == 0)) pressed = true;
+
+    // Map touches to mouse buttons checking
+    if ((CORE.Input.Touch.currentTouchState[button] == 1) && (CORE.Input.Touch.previousTouchState[button] == 0)) pressed = true;
 #endif
 
     return pressed;
@@ -2518,9 +2517,10 @@ bool IsMouseButtonDown(int button)
 #if defined(PLATFORM_ANDROID)
     if (IsGestureDetected(GESTURE_HOLD)) down = true;
 #else
-    // NOTE: On PLATFORM_DESKTOP and PLATFORM_WEB IsMouseButtonDown() is equivalent to GESTURE_HOLD or GESTURE_DRAG
-    if (GetMouseButtonStatus(button) == 1) down = true;
-    // || IsGestureDetected(GESTURE_HOLD) || IsGestureDetected(GESTURE_DRAG)) down = true;
+    if (CORE.Input.Mouse.currentButtonState[button] == 1) down = true;
+
+    // Map touches to mouse buttons checking
+    if (CORE.Input.Touch.currentTouchState[button] == 1) down = true;
 #endif
 
     return down;
@@ -2536,8 +2536,10 @@ bool IsMouseButtonReleased(int button)
         released = GetGestureDetected() == GESTURE_TAP;
     #endif
 #else
-    if ((CORE.Input.Mouse.currentButtonState[button] != CORE.Input.Mouse.previousButtonState[button]) &&
-        (GetMouseButtonStatus(button) == 0)) released = true;
+    if ((CORE.Input.Mouse.currentButtonState[button] == 0) && (CORE.Input.Mouse.previousButtonState[button] == 1)) released = true;
+    
+    // Map touches to mouse buttons checking
+    if ((CORE.Input.Touch.currentTouchState[button] == 0) && (CORE.Input.Touch.previousTouchState[button] == 1)) released = true;
 #endif
 
     return released;
@@ -2549,7 +2551,10 @@ bool IsMouseButtonUp(int button)
     bool up = false;
 
 #if !defined(PLATFORM_ANDROID)
-    if (GetMouseButtonStatus(button) == 0) up = true;
+    if (CORE.Input.Mouse.currentButtonState[button] == 0) up = true;
+    
+    // Map touches to mouse buttons checking
+    if (CORE.Input.Touch.currentTouchState[button] == 0) up = true;
 #endif
 
     return up;
@@ -2578,12 +2583,13 @@ int GetMouseY(void)
 // Returns mouse position XY
 Vector2 GetMousePosition(void)
 {
-    Vector2 position = { 0.0f, 0.0f };
+    Vector2 position = { 0 };
 
 #if defined(PLATFORM_ANDROID) || defined(PLATFORM_WEB)
     position = GetTouchPosition(0);
 #else
-    position = (Vector2){ (CORE.Input.Mouse.position.x + CORE.Input.Mouse.offset.x)*CORE.Input.Mouse.scale.x, (CORE.Input.Mouse.position.y + CORE.Input.Mouse.offset.y)*CORE.Input.Mouse.scale.y };
+    position.x = (CORE.Input.Mouse.position.x + CORE.Input.Mouse.offset.x)*CORE.Input.Mouse.scale.x;
+    position.y = (CORE.Input.Mouse.position.y + CORE.Input.Mouse.offset.y)*CORE.Input.Mouse.scale.y;
 #endif
 
     return position;
@@ -2682,7 +2688,6 @@ Vector2 GetTouchPosition(int index)
     // TODO: GLFW is not supporting multi-touch input just yet
     // https://www.codeproject.com/Articles/668404/Programming-for-Multi-Touch
     // https://docs.microsoft.com/en-us/windows/win32/wintouch/getting-started-with-multi-touch-messages
-
     if (index == 0) position = GetMousePosition();
 #endif
 
@@ -3452,36 +3457,6 @@ static void Wait(float ms)
 #endif
 }
 
-// Get one key state
-static bool GetKeyStatus(int key)
-{
-#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB)
-    return glfwGetKey(CORE.Window.handle, key);
-#elif defined(PLATFORM_ANDROID)
-    // NOTE: Android supports up to 260 keys
-    if (key < 0 || key > 260) return false;
-    else return CORE.Input.Keyboard.currentKeyState[key];
-#elif defined(PLATFORM_RPI) || defined(PLATFORM_UWP)
-    // NOTE: Keys states are filled in PollInputEvents()
-    if (key < 0 || key > 511) return false;
-    else return CORE.Input.Keyboard.currentKeyState[key];
-#endif
-}
-
-// Get one mouse button state
-static bool GetMouseButtonStatus(int button)
-{
-#if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB)
-    return glfwGetMouseButton(CORE.Window.handle, button);
-#elif defined(PLATFORM_ANDROID)
-    // TODO: Check for virtual mouse?
-    return false;
-#elif defined(PLATFORM_RPI) || defined(PLATFORM_UWP)
-    // NOTE: Mouse buttons states are filled in PollInputEvents()
-    return CORE.Input.Mouse.currentButtonState[button];
-#endif
-}
-
 // Get gamepad button generic to all platforms
 static int GetGamepadButton(int button)
 {
@@ -3631,6 +3606,7 @@ static void PollInputEvents(void)
     // Register previous mouse states
     CORE.Input.Mouse.previousWheelMove = CORE.Input.Mouse.currentWheelMove;
     CORE.Input.Mouse.currentWheelMove = 0;
+
     for (int i = 0; i < 3; i++) CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i];
 
     // Loop over pending messages
@@ -3771,16 +3747,7 @@ static void PollInputEvents(void)
 #endif  // PLATFORM_UWP
 
 #if defined(PLATFORM_DESKTOP) || defined(PLATFORM_WEB)
-    // Mouse input polling
-    double mouseX;
-    double mouseY;
-
-    glfwGetCursorPos(CORE.Window.handle, &mouseX, &mouseY);
-
-    CORE.Input.Mouse.position.x = (float)mouseX;
-    CORE.Input.Mouse.position.y = (float)mouseY;
-
-    // Keyboard input polling (automatically managed by GLFW3 through callback)
+    // Keyboard/Mouse input polling (automatically managed by GLFW3 through callback)
 
     // Register previous keys states
     for (int i = 0; i < 512; i++) CORE.Input.Keyboard.previousKeyState[i] = CORE.Input.Keyboard.currentKeyState[i];
@@ -3788,8 +3755,12 @@ static void PollInputEvents(void)
     // Register previous mouse states
     for (int i = 0; i < 3; i++) CORE.Input.Mouse.previousButtonState[i] = CORE.Input.Mouse.currentButtonState[i];
 
+    // Register previous mouse wheel state
     CORE.Input.Mouse.previousWheelMove = CORE.Input.Mouse.currentWheelMove;
     CORE.Input.Mouse.currentWheelMove = 0;
+
+    // Register previous touch states
+    for (int i = 0; i < MAX_TOUCH_POINTS; i++) CORE.Input.Touch.previousTouchState[i] = CORE.Input.Touch.currentTouchState[i];
 #endif
 
 #if defined(PLATFORM_DESKTOP)
@@ -4015,13 +3986,20 @@ static void KeyCallback(GLFWwindow *window, int key, int scancode, int action, i
         }
 #endif  // SUPPORT_SCREEN_CAPTURE
     }
-    else CORE.Input.Keyboard.currentKeyState[key] = action;
+    else 
+    {
+        // WARNING: GLFW could return GLFW_REPEAT, we need to consider it as 1
+        // to work properly with our implementation (IsKeyDown/IsKeyUp checks)
+        if (action == GLFW_RELEASE) CORE.Input.Keyboard.currentKeyState[key] = 0;
+        else CORE.Input.Keyboard.currentKeyState[key] = 1;
+    }
 }
 
 // GLFW3 Mouse Button Callback, runs on mouse button pressed
 static void MouseButtonCallback(GLFWwindow *window, int button, int action, int mods)
 {
-    CORE.Input.Mouse.previousButtonState[button] = CORE.Input.Mouse.currentButtonState[button];
+    // WARNING: GLFW could only return GLFW_PRESS (1) or GLFW_RELEASE (0) for now, 
+    // but future releases may add more actions (i.e. GLFW_REPEAT)
     CORE.Input.Mouse.currentButtonState[button] = action;
     
 #if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES)
@@ -4029,8 +4007,8 @@ static void MouseButtonCallback(GLFWwindow *window, int button, int action, int
     GestureEvent gestureEvent = { 0 };
 
     // Register touch actions
-    if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) gestureEvent.touchAction = TOUCH_DOWN;
-    else if (IsMouseButtonReleased(MOUSE_LEFT_BUTTON)) gestureEvent.touchAction = TOUCH_UP;
+    if ((CORE.Input.Mouse.currentButtonState[button] == 1) && (CORE.Input.Mouse.previousButtonState[button] == 0)) gestureEvent.touchAction = TOUCH_DOWN;
+    else if ((CORE.Input.Mouse.currentButtonState[button] == 0) && (CORE.Input.Mouse.previousButtonState[button] == 1)) gestureEvent.touchAction = TOUCH_UP;
     
     // NOTE: TOUCH_MOVE event is registered in MouseCursorPosCallback()
 
@@ -4055,6 +4033,10 @@ static void MouseButtonCallback(GLFWwindow *window, int button, int action, int
 // GLFW3 Cursor Position Callback, runs on mouse move
 static void MouseCursorPosCallback(GLFWwindow *window, double x, double y)
 {
+    CORE.Input.Mouse.position.x = (float)x;
+    CORE.Input.Mouse.position.y = (float)y;
+    CORE.Input.Touch.position[0] = CORE.Input.Mouse.position;
+    
 #if defined(SUPPORT_GESTURES_SYSTEM) && defined(SUPPORT_MOUSE_GESTURES)
     // Process mouse events as touches to be able to use mouse-gestures
     GestureEvent gestureEvent = { 0 };
@@ -4068,9 +4050,7 @@ static void MouseCursorPosCallback(GLFWwindow *window, double x, double y)
     gestureEvent.pointCount = 1;
 
     // Register touch points position, only one point registered
-    gestureEvent.position[0] = (Vector2){ (float)x, (float)y };
-
-    CORE.Input.Touch.position[0] = gestureEvent.position[0];
+    gestureEvent.position[0] = CORE.Input.Touch.position[0];
 
     // Normalize gestureEvent.position[0] for CORE.Window.screen.width and CORE.Window.screen.height
     gestureEvent.position[0].x /= (float)GetScreenWidth();
@@ -4388,8 +4368,7 @@ static int32_t AndroidInputCallback(struct android_app *app, AInputEvent *event)
         CORE.Input.Touch.position[0].x = 0;
         CORE.Input.Touch.position[0].y = 0;
     }
-    else // TODO:Not sure what else should be handled
-        return 0;
+    else return 0; // TODO: Not sure what else should be handled
 
 #if defined(SUPPORT_GESTURES_SYSTEM)
     GestureEvent gestureEvent = { 0 };
@@ -4496,6 +4475,12 @@ static EM_BOOL EmscriptenMouseCallback(int eventType, const EmscriptenMouseEvent
 // Register touch input events
 static EM_BOOL EmscriptenTouchCallback(int eventType, const EmscriptenTouchEvent *touchEvent, void *userData)
 {
+    for (int i = 0; i < touchEvent->numTouches; i++) 
+    {
+        if (eventType == EMSCRIPTEN_EVENT_TOUCHSTART) CORE.Input.Touch.currentTouchState[i] = 1;
+        else if (eventType == EMSCRIPTEN_EVENT_TOUCHEND) CORE.Input.Touch.currentTouchState[i] = 0;
+    }
+
 #if defined(SUPPORT_GESTURES_SYSTEM)
     GestureEvent gestureEvent = { 0 };
 

src/raylib.h

@@ -156,6 +156,7 @@
 #define FormatText  TextFormat
 #define SubText     TextSubtext
 #define ShowWindow  UnhideWindow
+#define LoadText    LoadFileText
 
 //----------------------------------------------------------------------------------
 // Structures Definition
@@ -951,6 +952,8 @@ RLAPI int GetRandomValue(int min, int max);                       // Returns a r
 // Files management functions
 RLAPI unsigned char *LoadFileData(const char *fileName, int *bytesRead);     // Load file data as byte array (read)
 RLAPI void SaveFileData(const char *fileName, void *data, int bytesToWrite); // Save data to file from byte array (write)
+RLAPI char *LoadFileText(const char *fileName);                   // Load text data from file (read), returns a '\0' terminated string
+RLAPI void SaveFileText(const char *fileName, char *text);        // Save text data to file (write), string must be '\0' terminated
 RLAPI bool FileExists(const char *fileName);                      // Check if file exists
 RLAPI bool IsFileExtension(const char *fileName, const char *ext);// Check file extension
 RLAPI bool DirectoryExists(const char *dirPath);                  // Check if a directory path exists
@@ -1322,7 +1325,6 @@ RLAPI RayHitInfo GetCollisionRayGround(Ray ray, float groundHeight);
 //------------------------------------------------------------------------------------
 
 // Shader loading/unloading functions
-RLAPI char *LoadText(const char *fileName);                               // Load chars array from text file
 RLAPI Shader LoadShader(const char *vsFileName, const char *fsFileName);  // Load shader from files and bind default locations
 RLAPI Shader LoadShaderCode(const char *vsCode, const char *fsCode);      // Load shader from code strings and bind default locations
 RLAPI void UnloadShader(Shader shader);                                   // Unload shader from GPU memory (VRAM)

src/raymath.h

@@ -268,6 +268,14 @@ RMDEF Vector2 Vector2Lerp(Vector2 v1, Vector2 v2, float amount)
     return result;
 }
 
+// Rotate Vector by float in Degrees.
+RMDEF Vector2 Vector2Rotate(Vector2 v, float degs)
+{
+    float rads = degs*DEG2RAD;
+    Vector2 result = {v.x * cosf(rads) - v.y * sinf(rads) , v.x * sinf(rads) + v.y * cosf(rads) };
+    return result;
+}
+
 //----------------------------------------------------------------------------------
 // Module Functions Definition - Vector3 math
 //----------------------------------------------------------------------------------

src/rlgl.h

@@ -546,7 +546,6 @@ RLAPI void rlUnloadMesh(Mesh mesh);                                       // Unl
 // NOTE: This functions are useless when using OpenGL 1.1
 //------------------------------------------------------------------------------------
 // Shader loading/unloading functions
-RLAPI char *LoadText(const char *fileName);                               // Load chars array from text file
 RLAPI Shader LoadShader(const char *vsFileName, const char *fsFileName);  // Load shader from files and bind default locations
 RLAPI Shader LoadShaderCode(const char *vsCode, const char *fsCode);      // Load shader from code strings and bind default locations
 RLAPI void UnloadShader(Shader shader);                                   // Unload shader from GPU memory (VRAM)
@@ -588,6 +587,7 @@ RLAPI void ToggleVrMode(void);                          // Enable/Disable VR exp
 RLAPI void BeginVrDrawing(void);                        // Begin VR simulator stereo rendering
 RLAPI void EndVrDrawing(void);                          // End VR simulator stereo rendering
 
+RLAPI char *LoadFileText(const char *fileName);         // Load chars array from text file
 RLAPI int GetPixelDataSize(int width, int height, int format);// Get pixel data size in bytes (image or texture)
 #endif
 
@@ -605,22 +605,20 @@ RLAPI int GetPixelDataSize(int width, int height, int format);// Get pixel data
 
 #if defined(RLGL_IMPLEMENTATION)
 
-#if !defined(RLGL_STANDALONE)
+#if defined(RLGL_STANDALONE)
+    #include <stdio.h>              // Required for: fopen(), fseek(), fread(), fclose() [LoadFileText]
+#else
     // Check if config flags have been externally provided on compilation line
     #if !defined(EXTERNAL_CONFIG_FLAGS)
         #include "config.h"         // Defines module configuration flags
     #endif
+    #include "raymath.h"            // Required for: Vector3 and Matrix functions
 #endif
 
 #include <stdlib.h>                 // Required for: malloc(), free()
-#include <stdio.h>                  // Required for: fopen(), fseek(), fread(), fclose() [LoadText]
 #include <string.h>                 // Required for: strcmp(), strlen() [Used in rlglInit(), on extensions loading]
 #include <math.h>                   // Required for: atan2f(), fabs()
 
-#if !defined(RLGL_STANDALONE)
-    #include "raymath.h"            // Required for: Vector3 and Matrix functions
-#endif
-
 #if defined(GRAPHICS_API_OPENGL_11)
     #if defined(__APPLE__)
         #include <OpenGL/gl.h>      // OpenGL 1.1 library for OSX
@@ -2984,49 +2982,6 @@ Shader GetShaderDefault(void)
 #endif
 }
 
-// Load text data from file
-// NOTE: text chars array should be freed manually
-char *LoadText(const char *fileName)
-{
-    char *text = NULL;
-
-    if (fileName != NULL)
-    {
-        FILE *textFile = fopen(fileName, "rt");
-
-        if (textFile != NULL)
-        {
-            // WARNING: When reading a file as 'text' file,
-            // text mode causes carriage return-linefeed translation...
-            // ...but using fseek() should return correct byte-offset
-            fseek(textFile, 0, SEEK_END);
-            int size = ftell(textFile);
-            fseek(textFile, 0, SEEK_SET);
-
-            if (size > 0)
-            {
-                text = (char *)RL_MALLOC(sizeof(char)*(size + 1));
-                int count = fread(text, sizeof(char), size, textFile);
-
-                // WARNING: \r\n is converted to \n on reading, so,
-                // read bytes count gets reduced by the number of lines
-                if (count < size)
-                {
-                    text = RL_REALLOC(text, count + 1);
-                }
-                
-                // zero-terminate the string
-                text[count] = '\0';
-            }
-
-            fclose(textFile);
-        }
-        else TRACELOG(LOG_WARNING, "[%s] Text file could not be opened", fileName);
-    }
-
-    return text;
-}
-
 // Load shader from files and bind default locations
 // NOTE: If shader string is NULL, using default vertex/fragment shaders
 Shader LoadShader(const char *vsFileName, const char *fsFileName)
@@ -3038,8 +2993,8 @@ Shader LoadShader(const char *vsFileName, const char *fsFileName)
     char *vShaderStr = NULL;
     char *fShaderStr = NULL;
 
-    if (vsFileName != NULL) vShaderStr = LoadText(vsFileName);
-    if (fsFileName != NULL) fShaderStr = LoadText(fsFileName);
+    if (vsFileName != NULL) vShaderStr = LoadFileText(vsFileName);
+    if (fsFileName != NULL) fShaderStr = LoadFileText(fsFileName);
 
     shader = LoadShaderCode(vShaderStr, fShaderStr);
 
@@ -4643,6 +4598,50 @@ static Color *GenNextMipmap(Color *srcData, int srcWidth, int srcHeight)
 #endif
 
 #if defined(RLGL_STANDALONE)
+// Load text data from file, returns a '\0' terminated string
+// NOTE: text chars array should be freed manually
+char *LoadFileText(const char *fileName)
+{
+    char *text = NULL;
+
+    if (fileName != NULL)
+    {
+        FILE *textFile = fopen(fileName, "rt");
+
+        if (textFile != NULL)
+        {
+            // WARNING: When reading a file as 'text' file,
+            // text mode causes carriage return-linefeed translation...
+            // ...but using fseek() should return correct byte-offset
+            fseek(textFile, 0, SEEK_END);
+            int size = ftell(textFile);
+            fseek(textFile, 0, SEEK_SET);
+
+            if (size > 0)
+            {
+                text = (char *)RL_MALLOC(sizeof(char)*(size + 1));
+                int count = fread(text, sizeof(char), size, textFile);
+
+                // WARNING: \r\n is converted to \n on reading, so,
+                // read bytes count gets reduced by the number of lines
+                if (count < size) text = RL_REALLOC(text, count + 1);
+
+                // Zero-terminate the string
+                text[count] = '\0';
+                
+                TRACELOG(LOG_INFO, "[%s] Text file loaded successfully", fileName);
+            }
+            else TRACELOG(LOG_WARNING, "[%s] Text file could not be read", fileName);
+
+            fclose(textFile);
+        }
+        else TRACELOG(LOG_WARNING, "[%s] Text file could not be opened", fileName);
+    }
+    else TRACELOG(LOG_WARNING, "File name provided is not valid");
+
+    return text;
+}
+
 // Get pixel data size in bytes (image or texture)
 // NOTE: Size depends on pixel format
 int GetPixelDataSize(int width, int height, int format)

src/shell.html

@@ -173,8 +173,8 @@ jwE50AGjLCVuS8Yt4H7OgZLKK5EKOsLviEWJSL/+0uMi7gLUSBseYwqEbXvSHCec1CJvZPyHCmYQffaB
         <div class="emscripten" id="status">Downloading...</div>
 
         <span id='controls'>
-          <span><input type="button" value="🖵 FULLSCREEN" onclick="Module.requestFullscreen(false, false)"></span>
-          <span><input type="button" id="btn-audio" value="🔇 SUSPEND" onclick="toggleAudio()"></span>
+          <span><input type="button" value="FULLSCREEN" onclick="Module.requestFullscreen(false, false)"></span>
+          <span><input type="button" id="btn-audio" value="AUDIO OFF" onclick="toggleAudio()"></span>
         </span>
 
         <div class="emscripten">
@@ -305,7 +305,7 @@ jwE50AGjLCVuS8Yt4H7OgZLKK5EKOsLviEWJSL/+0uMi7gLUSBseYwqEbXvSHCec1CJvZPyHCmYQffaB
                 construct(target, args) {
                     const result = new target(...args);
                     audioContexList.push(result);
-                    if (result.state == "suspended") audioBtn.value = "🔈 RESUME";
+                    if (result.state == "suspended") audioBtn.value = "AUDIO ON";
                     return result;
                 }
             });
@@ -318,8 +318,8 @@ jwE50AGjLCVuS8Yt4H7OgZLKK5EKOsLviEWJSL/+0uMi7gLUSBseYwqEbXvSHCec1CJvZPyHCmYQffaB
                 else if (ctx.state == "running") ctx.suspend();
             });
             
-            if (resumed) audioBtn.value = "🔇 SUSPEND";
-            else audioBtn.value = "🔈 RESUME";
+            if (resumed) audioBtn.value = "AUDIO OFF";
+            else audioBtn.value = "AUDIO ON";
         }
     </script>
     {{{ SCRIPT }}}

src/utils.c

@@ -169,6 +169,8 @@ unsigned char *LoadFileData(const char *fileName, int *bytesRead)
     unsigned char *data = NULL;
     *bytesRead = 0;
 
+    if (fileName != NULL)
+    {
         FILE *file = fopen(fileName, "rb");
 
         if (file != NULL)
@@ -195,12 +197,16 @@ unsigned char *LoadFileData(const char *fileName, int *bytesRead)
             fclose(file);
         }
         else TRACELOG(LOG_WARNING, "[%s] File could not be opened", fileName);
+    }
+    else TRACELOG(LOG_WARNING, "File name provided is not valid");
 
     return data;
 }
 
 // Save data to file from buffer
 void SaveFileData(const char *fileName, void *data, int bytesToWrite)
+{
+    if (fileName != NULL)
     {
         FILE *file = fopen(fileName, "wb");
 
@@ -210,11 +216,79 @@ void SaveFileData(const char *fileName, void *data, int bytesToWrite)
 
             if (count == 0) TRACELOG(LOG_WARNING, "[%s] File could not be written", fileName);
             else if (count != bytesToWrite) TRACELOG(LOG_WARNING, "[%s] File partially written", fileName);
+            else TRACELOG(LOG_INFO, "[%s] File successfully saved", fileName);
 
             fclose(file);
         }
         else TRACELOG(LOG_WARNING, "[%s] File could not be opened", fileName);
     }
+    else TRACELOG(LOG_WARNING, "File name provided is not valid");
+}
+
+// Load text data from file, returns a '\0' terminated string
+// NOTE: text chars array should be freed manually
+char *LoadFileText(const char *fileName)
+{
+    char *text = NULL;
+
+    if (fileName != NULL)
+    {
+        FILE *textFile = fopen(fileName, "rt");
+
+        if (textFile != NULL)
+        {
+            // WARNING: When reading a file as 'text' file,
+            // text mode causes carriage return-linefeed translation...
+            // ...but using fseek() should return correct byte-offset
+            fseek(textFile, 0, SEEK_END);
+            int size = ftell(textFile);
+            fseek(textFile, 0, SEEK_SET);
+
+            if (size > 0)
+            {
+                text = (char *)RL_MALLOC(sizeof(char)*(size + 1));
+                int count = fread(text, sizeof(char), size, textFile);
+
+                // WARNING: \r\n is converted to \n on reading, so,
+                // read bytes count gets reduced by the number of lines
+                if (count < size) text = RL_REALLOC(text, count + 1);
+
+                // Zero-terminate the string
+                text[count] = '\0';
+                
+                TRACELOG(LOG_INFO, "[%s] Text file loaded successfully", fileName);
+            }
+            else TRACELOG(LOG_WARNING, "[%s] Text file could not be read", fileName);
+
+            fclose(textFile);
+        }
+        else TRACELOG(LOG_WARNING, "[%s] Text file could not be opened", fileName);
+    }
+    else TRACELOG(LOG_WARNING, "File name provided is not valid");
+
+    return text;
+}
+
+// Save text data to file (write), string must be '\0' terminated
+void SaveFileText(const char *fileName, char *text)
+{
+    if (fileName != NULL)
+    {
+        FILE *file = fopen(fileName, "wt");
+
+        if (file != NULL)
+        {
+            int count = fprintf(file, "%s", text);
+
+            if (count == 0) TRACELOG(LOG_WARNING, "[%s] Text file could not be written", fileName);
+            else TRACELOG(LOG_INFO, "[%s] Text file successfully saved", fileName);
+
+            fclose(file);
+        }
+        else TRACELOG(LOG_WARNING, "[%s] Text file could not be opened", fileName);
+    }
+    else TRACELOG(LOG_WARNING, "File name provided is not valid");
+}
 
 #if defined(PLATFORM_ANDROID)
 // Initialize asset manager from android app