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Example resize fixes using IsWindowResized()

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This commit is contained in:
Jon Daniel 2025-08-02 00:07:46 +02:00
commit b16313a2d3
1 changed files with 325 additions and 177 deletions
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34
examples/shaders/shaders_spotlight.c
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@ -62,6 +62,9 @@ typedef struct Star {
Vector2 speed;
} Star;
int screenWidth = 800;
int screenHeight = 450;
static void UpdateStar(Star *s);
static void ResetStar(Star *s);
@ -72,9 +75,6 @@ int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [shaders] example - shader spotlight");
HideCursor();
@ -85,10 +85,8 @@ int main(void)
for (int n = 0; n < MAX_STARS; n++) ResetStar(&stars[n]);
// Progress all the stars on, so they don't all start in the centre
for (int m = 0; m < screenWidth/2.0; m++)
{
for (int m = 0; m < screenWidth * 0.5; m++)
for (int n = 0; n < MAX_STARS; n++) UpdateStar(&stars[n]);
}
int frameCounter = 0;
@ -117,7 +115,7 @@ int main(void)
// Tell the shader how wide the screen is so we can have
// a pitch black half and a dimly lit half.
unsigned int wLoc = GetShaderLocation(shdrSpot, "screenWidth");
float sw = (float)GetScreenWidth();
float sw = (float)screenWidth;
SetShaderValue(shdrSpot, wLoc, &sw, SHADER_UNIFORM_FLOAT);
// Randomize the locations and velocities of the spotlights
@ -150,8 +148,16 @@ int main(void)
{
// Update
//----------------------------------------------------------------------------------
if (IsWindowResized())
{
screenWidth = GetScreenWidth();
screenHeight = GetScreenHeight();
}
frameCounter++;
sw = (float)screenWidth;
SetShaderValue(shdrSpot, wLoc, &sw, SHADER_UNIFORM_FLOAT);
// Move the stars, resetting them if the go offscreen
for (int n = 0; n < MAX_STARS; n++) UpdateStar(&stars[n]);
@ -194,8 +200,8 @@ int main(void)
for (int i = 0; i < 16; i++)
{
DrawTexture(texRay,
(int)((screenWidth/2.0f) + cos((frameCounter + i*8)/51.45f)*(screenWidth/2.2f) - 32),
(int)((screenHeight/2.0f) + sin((frameCounter + i*8)/17.87f)*(screenHeight/4.2f)), WHITE);
(int)((screenWidth * 0.5f) + cos((frameCounter + i*8)/51.45f)*(screenWidth/2.2f) - 32),
(int)((screenHeight * 0.5f) + sin((frameCounter + i*8)/17.87f)*(screenHeight/4.2f)), WHITE);
}
// Draw spot lights
@ -210,8 +216,8 @@ int main(void)
DrawFPS(10, 10);
DrawText("Move the mouse!", 10, 30, 20, GREEN);
DrawText("Pitch Black", (int)(screenWidth*0.2f), screenHeight/2, 20, GREEN);
DrawText("Dark", (int)(screenWidth*.66f), screenHeight/2, 20, GREEN);
DrawText("Pitch Black", (int)(screenWidth*0.2f), screenHeight * 0.5f, 20, GREEN);
DrawText("Dark", (int)(screenWidth*.66f), screenHeight * 0.5f, 20, GREEN);
EndDrawing();
//----------------------------------------------------------------------------------
@ -231,7 +237,7 @@ int main(void)
static void ResetStar(Star *s)
{
s->position = (Vector2){ GetScreenWidth()/2.0f, GetScreenHeight()/2.0f };
s->position = (Vector2){ screenWidth * 0.5f, screenHeight * 0.5f };
do
{
@ -247,8 +253,8 @@ static void UpdateStar(Star *s)
{
s->position = Vector2Add(s->position, s->speed);
if ((s->position.x < 0) || (s->position.x > GetScreenWidth()) ||
(s->position.y < 0) || (s->position.y > GetScreenHeight()))
if ((s->position.x < 0) || (s->position.x > screenWidth) ||
(s->position.y < 0) || (s->position.y > screenHeight))
{
ResetStar(s);
}