rien d'important

main.c

@@ -3,8 +3,14 @@
 
 #include "raylib.h"
 
-#define MIN(a, b) (a) < (b) ? (a) : (b)
-#define MAX(a, b) (a) > (b) ? (a) : (b)
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#define ABS(a) ((a) < 0 ? -(a) : (a))
+
+#define RAD_TO_DEG(rad) (rad) * (180 / PI)
+#define DEG_TO_RAD(deg) (deg) / (180 / PI)
+
+#define NB_MAX_BULLET 5000
 
 typedef struct Vec2i {
     union {
@@ -17,6 +23,12 @@ typedef struct Vec2i {
     };
 } Vec2i;
 
+typedef struct Bullet {
+    Vector2 coord;
+    float angle;
+    float lifetime;
+} Bullet;
+
 typedef enum Cardinal {
     CARDINAL_BEGIN_NOT_AT_ZERO = 0,
     NORD_OUEST, NORD,   NORD_EST,
@@ -40,28 +52,31 @@ char *cardinal_text[CARDINAL_SIZE] = {
 
 Vec2i screen = {.width = 1344, .height = 756};
 
-const int trap_len = 300;
-Rectangle trap = {
-    .width = trap_len,
-    .height = trap_len,
-};
+Rectangle trap;
 
 Texture player_t;
 Vec2i player;
-const int player_radius = 25;
+float player_radius;
 const int player_speed = 5;
 
+Image map_collision;
 Texture map;
 Vector2 map_coord;
 const float map_factor = 2.0f;
 
+Texture bullet;
+Bullet bullets[NB_MAX_BULLET];
+int bullet_index = 0;
+
 void handle_resize_window(void)
 {
     Vec2i old_screen = screen;
     screen.width = GetScreenWidth();
     screen.height = GetScreenHeight();
-    trap.x = screen.width/2 - trap_len/2;
-    trap.y = screen.height/2 - trap_len/2;
+    trap.width = screen.width/5;
+    trap.height = screen.height/5;
+    trap.x = (int) (screen.width/2 - trap.width/2);
+    trap.y = (int) (screen.height/2 - trap.height/2);
     player.x -= (old_screen.width - screen.width) / 2;
     player.y -= (old_screen.height - screen.height) / 2;
     map_coord.x -= (old_screen.width - screen.width) / 2;
@@ -75,6 +90,14 @@ int point_rec_collision(Vec2i point, Rectangle rec)
         (point.y >= rec.y && point.y <= rec.y + rec.height);
 }
 
+Vector2 move_forward_angle(Vector2 origin, float angle, float step)
+{
+    float rad = DEG_TO_RAD(angle);
+    origin.x += sin(rad) * step;
+    origin.y += cos(rad) * step;
+    return origin;
+}
+
 int move_player_inside_trap(Vec2i *player, Rectangle trap,
                             const int speed, const float delta_time)
 {
@@ -177,6 +200,69 @@ void move_map(Vector2 *map, Cardinal direction, const int speed, const float DT)
     }
 }
 
+float vector_angle(Vector2 base, Vector2 point)
+{
+    float x = point.x - base.x;
+    float y = point.y - base.y;
+    int pad = 0;
+    if (x < 0 && y <= 0) {
+        pad = 180;
+    } else if (x < 0 && y >= 0) {
+        pad = 180;
+    } else if (x >= 0 && y >= 0) {
+        pad = 360;
+    }
+    return ABS(pad - RAD_TO_DEG(atan(y / x)));
+}
+
+Vector2 map_to_screen_coord(Vector2 coord)
+{
+    Vector2 r = {.x = map_coord.x + coord.x, .y = map_coord.y + coord.y};
+    return r;
+}
+
+Vec2i screen_to_map_coord(Vec2i coord)
+{
+    Vec2i r = {.x = -map_coord.x + coord.x, .y = -map_coord.y + coord.y};
+    return r;
+}
+
+Vec2i Vec2i_cast(Vector2 vec)
+{
+    Vec2i v =  {
+        .x = vec.x,
+        .y = vec.y
+    };
+    return v;
+}
+
+Vector2 Vector2_cast(Vec2i vec)
+{
+    Vector2 v =  {
+        .x = vec.x,
+        .y = vec.y
+    };
+    return v;
+}
+
+int circle_collision(Image map, Vec2i coord, float radius)
+{
+    int count = 0;
+    for (
+        int x=MAX(0, MIN((coord.x-radius)/map_factor, map.width-1));
+        x<MAX(0, MIN((coord.x+radius)/map_factor, map.width-1));
+        x++) {
+        for (
+            int y=MAX(0, MIN((coord.y-radius)/map_factor, map.height-1));
+            y<MAX(0, MIN((coord.y+radius)/map_factor, map.height-1));
+            y++) {
+            Color c = *(Color*)(map.data + sizeof(c)*map.width*y + sizeof(c)*x);
+            count += c.r == 255 && c.b == 255 && c.g == 255 && c.a == 255;
+        }
+    }
+    return count;
+}
+
 int main(void)
 {
     SetTraceLogLevel(LOG_ERROR);
@@ -186,37 +272,105 @@ int main(void)
 
     player = (Vec2i) {.x = screen.width/2, .y = screen.height/2};
     player_t = LoadTexture("data/player.png");
-    map = LoadTexture("data/map2.png");
+    player_radius = player_t.width/2;
+    map_collision = LoadImage("data/map_collision.png");
+    map = LoadTexture("data/map_collision.png");
+    ImageFormat(&map_collision, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8);
     map_coord = (Vector2){
         screen.width/2 - map.width*map_factor/2,
         screen.height/2 - map.height*map_factor/2,
     };
 
+    bullet = LoadTexture("data/bullet.png");
+
     handle_resize_window();
 
     while (!WindowShouldClose()) {
         BeginDrawing();
         {
-            ClearBackground(BLACK);
+            ClearBackground(LIME);
             const float DT = GetFrameTime();
 
             if (IsWindowResized())
                 handle_resize_window();
 
+            // map
+            DrawTextureEx(map, map_coord, 0.0f, map_factor, WHITE);
+
+            Vector2 mouse = GetMousePosition();
+            float angle = vector_angle((Vector2){player.x, player.y}, mouse);
+
+            Vec2i old_player = player;
+            Vector2 old_map_coord = map_coord;
             if (!move_player_inside_trap(&player, trap, player_speed, DT)) {
                 Cardinal direction = snap_player_inside_trap(&player, trap);
                 move_map(&map_coord, direction, player_speed, DT);
             }
 
-            DrawTextureEx(map, map_coord, 0.0f, map_factor, WHITE);
-            DrawTexture(
-                player_t,
-                player.x-player_t.width/2,
-                player.y-player_t.height/2,
-                WHITE
-            );
+            Vec2i player_map = screen_to_map_coord(player);
 
-            // DrawRectangleLinesEx(trap, 1, RED);
+            if (circle_collision(map_collision, player_map, player_radius)) {
+                player = old_player;
+                map_coord = old_map_coord;
+            }
+
+            if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) {
+                bullets[bullet_index] = (Bullet) {
+                    .coord = move_forward_angle(
+                        Vector2_cast(player_map),
+                        angle + 90, player_radius
+                    ),
+                    .angle = -angle,
+                    .lifetime = 5.0f,
+                };
+
+                bullet_index = (bullet_index + 1) % NB_MAX_BULLET;
+            }
+
+            for (int i=0; i<NB_MAX_BULLET; i++) {
+                Bullet *b = &bullets[i];
+                if (b->lifetime > 0.0f) {
+                    b->lifetime -= DT;
+                    Vector2 co = map_to_screen_coord(b->coord);
+                    DrawTexturePro(
+                        bullet,
+                        (Rectangle) {0, 0, bullet.width, bullet.height},
+                        (Rectangle) {co.x, co.y, bullet.width, bullet.height},
+                        (Vector2) {bullet.width/2, bullet.height/2},
+                        b->angle, WHITE
+                    );
+                    b->coord = move_forward_angle(b->coord, 90-b->angle, 27.0f);
+
+                    int collision = circle_collision(
+                        map_collision, Vec2i_cast(b->coord), bullet.height/2
+                    );
+                    if (collision) {
+                        b->lifetime = -1.0f;
+                    }
+                }
+            }
+
+            if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) {
+                DrawLineEx(
+                    (Vector2){.x = player.x, .y = player.y},
+                    mouse, 5.0f, GOLD
+                );
+            }
+
+            DrawCircleV(Vector2_cast(player), player_radius, BLUE);
+
+            // player
+            DrawTexturePro(
+                player_t,
+                (Rectangle) {
+                    0, 0, player_t.width, player_t.height
+                },
+                (Rectangle) {
+                    player.x, player.y, player_t.width, player_t.height
+                },
+                (Vector2) {player_t.width/2, player_t.height/2},
+                450 - angle, WHITE
+            );
         }
         EndDrawing();
     }