tamanho da body

3 files changed, 38 insertions, 34 deletions

diff --git a/dat.h b/dat.h
new file mode 100644
index 0000000..e862217
--- /dev/null
+++ b/dat.h
@@ -0,0 +1,7 @@
+typedef struct {
+	float pos[2];
+	float size[2];
+	float vel[2];
+} Body;
+
+int checkcollision(Body *b1, Body *b2);
diff --git a/physics.c b/physics.c
new file mode 100644
index 0000000..f8d785b
--- /dev/null
+++ b/physics.c
@@ -0,0 +1,20 @@
+#include "dat.h"
+
+int
+checkcollision(Body *a, Body *b)
+{
+	float p[2], s[2], minx, miny, maxx, maxy;
+	
+	for(int i = 0; i < 2; i++) {
+		s[i] = a->size[i] + b->size[i];
+		p[i] = a->pos[i] - b->pos[i];
+	}
+
+	minx = p[0] - s[0];
+	maxx = p[0] + s[0];
+	miny = p[1] - s[1];
+	maxy = p[1] + s[1];
+
+	return minx < 0 && maxx > 0 && miny < 0 && maxy > 0;
+}
+
diff --git a/sdl3_main.c b/sdl3_main.c
index b4988bc..b5f1404 100644
--- a/sdl3_main.c
+++ b/sdl3_main.c
@@ -5,20 +5,11 @@
 
 #include <SDL3/SDL.h>
 
+#include "dat.h"
+
 #define BULLET_SIZE  2
 #define ENTITY_SIZE 16
 
-static void render(void);
-static void update(float delta);
-static void process_events(void);
-
-static int  checkcollision(float pos1[2], float size1[2], float pos2[2], float size2[2]);
-
-typedef struct {
-	float pos[2];
-	float vel[2];
-} Body;
-
 typedef struct {
 	Body body;
 } Player;
@@ -34,6 +25,10 @@ typedef struct {
 	bool active;
 } Bullet;
 
+static void render(void);
+static void update(float delta);
+static void process_events(void);
+
 static SDL_Window *window;
 static SDL_Renderer *renderer;
 static bool running;
@@ -68,6 +63,8 @@ main()
 		ghosts[i].active = 1;
 		ghosts[i].body.pos[0] = rand() % 800;
 		ghosts[i].body.pos[1] = rand() % 600;
+		ghosts[i].body.size[0] = ENTITY_SIZE;
+		ghosts[i].body.size[1] = ENTITY_SIZE;
 	}
 
 	running = true;
@@ -207,6 +204,8 @@ update(float delta)
 			bullet[i].body.vel[1] = dy * SPEED * 5.0;
 			bullet[i].body.pos[0] = player.body.pos[0];
 			bullet[i].body.pos[1] = player.body.pos[1];
+			bullet[i].body.size[0] = BULLET_SIZE;
+			bullet[i].body.size[1] = BULLET_SIZE;
 			bullet[i].active = true;
 		}
 	}
@@ -219,10 +218,7 @@ update(float delta)
 			if(!ghosts[j].active)
 				continue;
 
-			int r = checkcollision(
-					bullet[i].body.pos, (float[2]){ BULLET_SIZE, BULLET_SIZE },
-					ghosts[j].body.pos, (float[2]){ ENTITY_SIZE, ENTITY_SIZE }
-				);
+			int r = checkcollision(&bullet[i].body, &ghosts[j].body);
  
 			if(r) {
 				ghosts[j].active = false;
@@ -313,23 +309,4 @@ process_events()
 	}
 }
 
-int
-checkcollision(float p1[2], float s1[2], float p2[2], float s2[2])
-{
-	float p[2], s[2], minx, miny, maxx, maxy;
-	
-
-	for(int i = 0; i < 2; i++) {
-		s[i] = s1[i] + s2[i];
-		p[i] = p1[i] - p2[i];
-	}
-
-	minx = p[0] - s[0];
-	maxx = p[0] + s[0];
-	miny = p[1] - s[1];
-	maxy = p[1] + s[1];
-
-	return minx < 0 && maxx > 0 && miny < 0 && maxy > 0;
-}
-