diff options
Diffstat (limited to 'examples/shaders/shaders_spotlight.c')
| -rw-r--r-- | examples/shaders/shaders_spotlight.c | 79 |
1 files changed, 38 insertions, 41 deletions
diff --git a/examples/shaders/shaders_spotlight.c b/examples/shaders/shaders_spotlight.c index a21e3c82..c96c983d 100644 --- a/examples/shaders/shaders_spotlight.c +++ b/examples/shaders/shaders_spotlight.c @@ -29,10 +29,8 @@ ********************************************************************************************/ #include "raylib.h" -#include "raymath.h" -#include <stddef.h> -#include <stdint.h> +#include "raymath.h" #if defined(PLATFORM_DESKTOP) #define GLSL_VERSION 330 @@ -44,26 +42,26 @@ #define MAX_STARS 400 // Spot data -typedef struct { - Vector2 pos; - Vector2 vel; +typedef struct Spot { + Vector2 position; + Vector2 speed; float inner; float radius; // Shader locations - unsigned int posLoc; + unsigned int positionLoc; unsigned int innerLoc; unsigned int radiusLoc; } Spot; // Stars in the star field have a position and velocity typedef struct Star { - Vector2 pos; - Vector2 vel; + Vector2 position; + Vector2 speed; } Star; -void UpdateStar(Star *s); -void ResetStar(Star *s); +static void UpdateStar(Star *s); +static void ResetStar(Star *s); //------------------------------------------------------------------------------------ // Program main entry point @@ -75,7 +73,7 @@ int main(void) const int screenWidth = 800; const int screenHeight = 450; - InitWindow(screenWidth, screenHeight, "raylib - shader spotlight"); + InitWindow(screenWidth, screenHeight, "raylib [shaders] example - shader spotlight"); HideCursor(); Texture texRay = LoadTexture("resources/raysan.png"); @@ -108,7 +106,7 @@ int main(void) innerName[6] = '0' + i; radiusName[6] = '0' + i; - spots[i].posLoc = GetShaderLocation(shdrSpot, posName); + spots[i].positionLoc = GetShaderLocation(shdrSpot, posName); spots[i].innerLoc = GetShaderLocation(shdrSpot, innerName); spots[i].radiusLoc = GetShaderLocation(shdrSpot, radiusName); @@ -124,20 +122,20 @@ int main(void) // and initialize the shader locations for (int i = 0; i < MAX_SPOTS; i++) { - spots[i].pos.x = (float)GetRandomValue(64, screenWidth - 64); - spots[i].pos.y = (float)GetRandomValue(64, screenHeight - 64); - spots[i].vel = (Vector2){ 0, 0 }; + spots[i].position.x = (float)GetRandomValue(64, screenWidth - 64); + spots[i].position.y = (float)GetRandomValue(64, screenHeight - 64); + spots[i].speed = (Vector2){ 0, 0 }; - while ((fabs(spots[i].vel.x) + fabs(spots[i].vel.y)) < 2) + while ((fabs(spots[i].speed.x) + fabs(spots[i].speed.y)) < 2) { - spots[i].vel.x = GetRandomValue(-400, 40) / 10.0f; - spots[i].vel.y = GetRandomValue(-400, 40) / 10.0f; + spots[i].speed.x = GetRandomValue(-400, 40) / 10.0f; + spots[i].speed.y = GetRandomValue(-400, 40) / 10.0f; } spots[i].inner = 28.0f * (i + 1); spots[i].radius = 48.0f * (i + 1); - SetShaderValue(shdrSpot, spots[i].posLoc, &spots[i].pos.x, SHADER_UNIFORM_VEC2); + SetShaderValue(shdrSpot, spots[i].positionLoc, &spots[i].position.x, SHADER_UNIFORM_VEC2); SetShaderValue(shdrSpot, spots[i].innerLoc, &spots[i].inner, SHADER_UNIFORM_FLOAT); SetShaderValue(shdrSpot, spots[i].radiusLoc, &spots[i].radius, SHADER_UNIFORM_FLOAT); } @@ -161,21 +159,21 @@ int main(void) if (i == 0) { Vector2 mp = GetMousePosition(); - spots[i].pos.x = mp.x; - spots[i].pos.y = screenHeight - mp.y; + spots[i].position.x = mp.x; + spots[i].position.y = screenHeight - mp.y; } else { - spots[i].pos.x += spots[i].vel.x; - spots[i].pos.y += spots[i].vel.y; + spots[i].position.x += spots[i].speed.x; + spots[i].position.y += spots[i].speed.y; - if (spots[i].pos.x < 64) spots[i].vel.x = -spots[i].vel.x; - if (spots[i].pos.x > (screenWidth - 64)) spots[i].vel.x = -spots[i].vel.x; - if (spots[i].pos.y < 64) spots[i].vel.y = -spots[i].vel.y; - if (spots[i].pos.y > (screenHeight - 64)) spots[i].vel.y = -spots[i].vel.y; + if (spots[i].position.x < 64) spots[i].speed.x = -spots[i].speed.x; + if (spots[i].position.x > (screenWidth - 64)) spots[i].speed.x = -spots[i].speed.x; + if (spots[i].position.y < 64) spots[i].speed.y = -spots[i].speed.y; + if (spots[i].position.y > (screenHeight - 64)) spots[i].speed.y = -spots[i].speed.y; } - SetShaderValue(shdrSpot, spots[i].posLoc, &spots[i].pos.x, SHADER_UNIFORM_VEC2); + SetShaderValue(shdrSpot, spots[i].positionLoc, &spots[i].position.x, SHADER_UNIFORM_VEC2); } // Draw @@ -188,7 +186,7 @@ int main(void) for (int n = 0; n < MAX_STARS; n++) { // Single pixel is just too small these days! - DrawRectangle((int)stars[n].pos.x, (int)stars[n].pos.y, 2, 2, WHITE); + DrawRectangle((int)stars[n].position.x, (int)stars[n].position.y, 2, 2, WHITE); } for (int i = 0; i < 16; i++) @@ -213,7 +211,6 @@ int main(void) DrawText("Pitch Black", (int)(screenWidth*0.2f), screenHeight/2, 20, GREEN); DrawText("Dark", (int)(screenWidth*.66f), screenHeight/2, 20, GREEN); - EndDrawing(); //---------------------------------------------------------------------------------- } @@ -230,26 +227,26 @@ int main(void) } -void ResetStar(Star *s) +static void ResetStar(Star *s) { - s->pos = (Vector2){ GetScreenWidth()/2.0f, GetScreenHeight()/2.0f }; + s->position = (Vector2){ GetScreenWidth()/2.0f, GetScreenHeight()/2.0f }; do { - s->vel.x = (float)GetRandomValue(-1000, 1000)/100.0f; - s->vel.y = (float)GetRandomValue(-1000, 1000)/100.0f; + s->speed.x = (float)GetRandomValue(-1000, 1000)/100.0f; + s->speed.y = (float)GetRandomValue(-1000, 1000)/100.0f; - } while (!(fabs(s->vel.x) + (fabs(s->vel.y) > 1))); + } while (!(fabs(s->speed.x) + (fabs(s->speed.y) > 1))); - s->pos = Vector2Add(s->pos, Vector2Multiply(s->vel, (Vector2){ 8.0f, 8.0f })); + s->position = Vector2Add(s->position, Vector2Multiply(s->speed, (Vector2){ 8.0f, 8.0f })); } -void UpdateStar(Star *s) +static void UpdateStar(Star *s) { - s->pos = Vector2Add(s->pos, s->vel); + s->position = Vector2Add(s->position, s->speed); - if ((s->pos.x < 0) || (s->pos.x > GetScreenWidth()) || - (s->pos.y < 0) || (s->pos.y > GetScreenHeight())) + if ((s->position.x < 0) || (s->position.x > GetScreenWidth()) || + (s->position.y < 0) || (s->position.y > GetScreenHeight())) { ResetStar(s); } |