feat(game): implement TMX map loading and basic game state

2 files changed, 92 insertions, 175 deletions

diff --git a/include/game.h b/include/game.h
new file mode 100644
index 0000000..9cdcf71
--- /dev/null
+++ b/include/game.h
@@ -0,0 +1,16 @@
+#ifndef GAME_H
+#define GAME_H
+
+typedef enum GameScreen {
+		SCREEN_TITLE,
+		SCREEN_PLAYING,
+		SCREEN_PAUSED,
+		SCREEN_GAME_OVER
+} GameScreen;
+
+#define SCREEN_WIDTH 1280
+#define SCREEN_HEIGHT 720
+
+#define BACKGROUND_COLOR (Color){ 88, 68, 34, 255 }
+
+#endif // GAME_H
diff --git a/src/main.c b/src/main.c
index 356736a..6e34985 100644
--- a/src/main.c
+++ b/src/main.c
@@ -1,188 +1,89 @@
-#include <raylib.h>
-#include <math.h>
-#include <stdbool.h>
+// src/main.c
+#include "raylib.h"
+#define RAYTMX_IMPLEMENTATION
+#include "raytmx.h"
 
-#define MAX_BULLET 100
-#define MAX_ENEMY 100
-
-typedef struct {
-  Vector2 position;
-  Vector2 velocity;
-  bool alive;
-} Bullet;
-
-typedef struct {
-  Vector2 position;
-  Vector2 movement;
-} Enemy;
-
-void updatePlayerMovement(Vector2* position, Vector2* movement, float speed, int playerWidth, int playerHeight) {
-    movement->x = 0.0f;
-    movement->y = 0.0f;
-
-    if (IsKeyDown(KEY_A))
-        movement->x -= 1.0f;
-    if (IsKeyDown(KEY_D))
-        movement->x += 1.0f;
-    if (IsKeyDown(KEY_W))
-        movement->y -= 1.0f;
-    if (IsKeyDown(KEY_S))
-        movement->y += 1.0f;
-
-    // Normalize the movement Vector
-    float magnitude = sqrt(movement->x * movement->x + movement->y * movement->y);
-    if (magnitude > 0)
-    {
-        movement->x /= magnitude;
-        movement->y /= magnitude;
-    }
-
-    //Keepl player in player area
-    if(position->x + (float)playerWidth >= GetScreenWidth())
-    {
-      position->x = GetScreenWidth()-(float)playerWidth;
-    }
-    if(position->x <= 0)
-    {
-      position->x = 0;
-    }
-    if(position->y + (float)playerWidth >= GetScreenHeight())
-    {
-      position->y = GetScreenHeight()-(float)playerHeight;
-    }
-    if(position->y <= 0)
-    {
-      position->y = 0;
-    }
-
-    // Update player position based on movement
-    float deltaTime = GetFrameTime();
-    position->x += movement->x * speed * deltaTime;
-    position->y += movement->y * speed * deltaTime;
-
-}
-
-void updateBullet(Bullet bullets[]) {
-  for(int i = 0; i < MAX_BULLET; i++)
-  {
-    bullets[i].position.x += bullets[i].velocity.x;
-    bullets[i].position.y += bullets[i].velocity.y;
-
-    int margin = 10;
-
-    if(bullets[i].position.x > GetScreenWidth() + margin)
-    {
-      bullets[i].alive = false;
-    }
-    if(bullets[i].position.x < 0 - margin)
-    {
-      bullets[i].alive = false;
-    }
-    if(bullets[i].position.y > GetScreenHeight() + margin)
-    {
-      bullets[i].alive = false;
-    }
-    if(bullets[i].position.y < 0 - margin)
-    {
-      bullets[i].alive = false;
-    }
-  }
-}
-
-void moveEnemy(Enemy *enemies, Vector2 playerPosition) {
-
-}
+#include "game.h"
 
 int main(void) {
-    // Initialization
-    //--------------------------------------------------------------------------------------
-    const int screenWidth = 800;
-    const int screenHeight = 450;
-
-    InitWindow(screenWidth, screenHeight, "Shooter");
-
-    Vector2 playerPosition = { (float)screenWidth / 2, (float)screenHeight / 2 };
-    Vector2 playerMovementVec = { 0.0f, 0.0f };
-    int playerHeight = 20;
-    int playerWidth = 20;
-    float playerSpeed = 200.0f;
-    int playerHP = 100;
-
-    int currentBullet = 0;
-    int bulletSpeed = 5;
-    Bullet bullets[MAX_BULLET] = {0};
-
-    int currentEnemy = 0;
-    int numEnemyAlive = 0;
-    Enemy enemies[MAX_ENEMY] = {0};
-
-    SetTargetFPS(240);
-
-    // Main game loop
-    while (!WindowShouldClose()) {    // Detect window close button or ESC key
-        updatePlayerMovement(&playerPosition, &playerMovementVec, playerSpeed, playerWidth, playerHeight);
-
-
-        Vector2 mousePosition = GetMousePosition();
-        float rotationAngle = atan2f(mousePosition.y - (playerPosition.y + (float)playerHeight/2), mousePosition.x - (playerPosition.x + (float)playerWidth/2)) * RAD2DEG;
+  InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "Dungeon Crawler");
+  SetTargetFPS(60);
 
-        int length = 50;
-        Vector2 endPoint = { playerPosition.x + (float)playerWidth/2 + length * cosf(rotationAngle * DEG2RAD), playerPosition.y + (float)playerHeight/2 + length * sinf(rotationAngle * DEG2RAD) };
+  GameScreen currentScreen = SCREEN_TITLE;
 
-        if(IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) {
-          Vector2 direction = {mousePosition.x - (playerPosition.x + (float)playerWidth/2), mousePosition.y - (playerPosition.y + (float)playerHeight/2)};
-          float length = sqrtf(direction.x * direction.x + direction.y * direction.y);
-          if (length != 0) {
-            direction.x /= length;
-            direction.y /= length;
-          }
-
-          Vector2 bulletVelocity = {direction.x * bulletSpeed, direction.y * bulletSpeed};
-          bullets[currentBullet].position = endPoint;
-          bullets[currentBullet].velocity = bulletVelocity;
-          bullets[currentBullet].alive = true;
-          currentBullet = (currentBullet + 1) % MAX_BULLET;
-        }
-
-        updateBullet(bullets);
-
-
-        // Draw
-        BeginDrawing();
-
-            ClearBackground(RAYWHITE);
-
-            //Draw background lines
-            for(int i=0; i < GetScreenWidth(); i += 50) {
-              DrawLineEx((Vector2){i, 0}, (Vector2){i, GetScreenHeight()}, 1, BLACK);
-            }
-
-            for(int i=0; i < GetScreenHeight(); i += 50) {
-              DrawLineEx((Vector2){0, i}, (Vector2){GetScreenWidth(), i}, 1, BLACK);
-            }
+  TmxMap *map = LoadTMX("assets/maps/debug.tmx");
+  if (map == NULL) {
+    CloseWindow();
+  }
 
-            //Draw player and "weapon"
-            DrawLineEx((Vector2){playerPosition.x+(float)playerWidth/2, playerPosition.y+(float)playerHeight/2}, endPoint, 5, RED);
-            DrawRectangle(playerPosition.x, playerPosition.y, playerWidth, playerHeight, GREEN);
+  Camera2D camera;
+  camera.target.x = (float)(map->width * map->tileWidth) / 2.0f;
+  camera.target.y = (float)(map->height * map->tileHeight) / 2.0f;
+  camera.offset.x = (float)SCREEN_WIDTH / 2.0f;
+  camera.offset.y = (float)SCREEN_HEIGHT / 2.0f;
+  camera.rotation = 0.0f;
+  camera.zoom = 4.0f;
 
-            //Draw debug info
-            DrawText(TextFormat("Current FPS: %i", (int)(1.0f / GetFrameTime())), 20, 20, 10, GREEN);
-            DrawText(TextFormat("Input: (%.2f, %.2f)", playerMovementVec.x, playerMovementVec.y), 20, 30, 10, RED);
-            DrawText(TextFormat("Player Position: (%.0f, %.0f)", playerPosition.x, playerPosition.y), 20, 40, 10, RED);
-            DrawText(TextFormat("Bullet Count: %i", currentBullet), 20, 50, 10, GREEN);
+  const float panSpeed = 20.0f; /* Pixel per second */
 
-            DrawText(TextFormat("HP: %i", playerHP), 20, 60, 10, RED);
+  while (!WindowShouldClose()) {
+    switch (currentScreen) {
+    case SCREEN_TITLE:
+      if (IsKeyPressed(KEY_ENTER))
+        currentScreen = SCREEN_PLAYING;
+      break;
+    case SCREEN_PLAYING:
+      if (IsKeyDown(KEY_UP))
+        camera.target.y += panSpeed * GetFrameTime();
+      if (IsKeyDown(KEY_DOWN))
+        camera.target.y -= panSpeed * GetFrameTime();
+      if (IsKeyDown(KEY_RIGHT))
+        camera.target.x += panSpeed * GetFrameTime();
+      if (IsKeyDown(KEY_LEFT))
+        camera.target.x -= panSpeed * GetFrameTime();
+      if (IsKeyDown(KEY_ESCAPE))
+        currentScreen = SCREEN_PAUSED;
+      break;
+    case SCREEN_PAUSED:
+      if (IsKeyDown(KEY_ESCAPE))
+        currentScreen = SCREEN_PLAYING;
+      break;
+		case SCREEN_GAME_OVER:
+			if (IsKeyDown(KEY_ENTER))
+				currentScreen = SCREEN_PLAYING;
+			break;
+    };
 
-            //Draw bullets
-            for(int i=0; i < MAX_BULLET; i++) {
-              DrawCircleV(bullets[i].position, 2, RED);
-            }
+    // --- DRAW ---
+    BeginDrawing();
+    ClearBackground(BLACK);
+		
 
-        EndDrawing();
+    switch (currentScreen) {
+    case SCREEN_TITLE:
+      DrawText("DUNGEON CRAWLER", 20, 20, 40, DARKGRAY);
+      break;
+		case SCREEN_PAUSED:
+			DrawText("PAUSED", 20, 20, 40, DARKGRAY);
+      break;
+    case SCREEN_PLAYING:
+      BeginMode2D(camera);
+      {
+				ClearBackground(BACKGROUND_COLOR);
+        AnimateTMX(map);
+        DrawTMX(map, &camera, NULL, 0, 0, WHITE);
+      }
+      EndMode2D();
+			break;
+    case SCREEN_GAME_OVER:
+      DrawText("GAME OVER", 20, 20, 40, RED);
+      break;
     }
 
-    // De-Initialization
-    CloseWindow();        // Close window and OpenGL context
-    return 0;
-}
+    EndDrawing();
+  }
 
+	UnloadTMX(map);
+  CloseWindow();
+  return 0;
+}