Add 2.5D models and rendering logic

25d_modles.cpp

@@ -0,0 +1,100 @@
+//2.5D modles!
+#include <SDL2/SDL.h>
+#include <cstdlib>
+#include <iostream>
+
+// --- Screen settings ---
+const int WIDTH = 400;
+const int HEIGHT = 300;
+
+// --- 2.5D models as simple sprites ---
+// Enemy sprite (5x5)
+const int ENEMY_SIZE = 5;
+const char enemy_sprite[ENEMY_SIZE][ENEMY_SIZE] = {
+    {' ', 'X', 'X', 'X', ' '},
+    {'X', 'X', 'X', 'X', 'X'},
+    {'X', 'X', 'X', 'X', 'X'},
+    {' ', 'X', 'X', 'X', ' '},
+    {' ', 'X', ' ', 'X', ' '}
+};
+
+// Health pack sprite (5x5)
+const char health_sprite[ENEMY_SIZE][ENEMY_SIZE] = {
+    {' ', 'H', 'H', 'H', ' '},
+    {'H', 'H', 'H', 'H', 'H'},
+    {'H', 'H', 'H', 'H', 'H'},
+    {' ', 'H', 'H', 'H', ' '},
+    {' ', 'H', ' ', 'H', ' '}
+};
+
+// --- Function to draw a sprite ---
+void draw_sprite(SDL_Renderer* renderer, const char sprite[][ENEMY_SIZE], int x, int y, int scale, SDL_Color color) {
+    for (int i = 0; i < ENEMY_SIZE; ++i) {
+        for (int j = 0; j < ENEMY_SIZE; ++j) {
+            if (sprite[i][j] != ' ') {
+                SDL_Rect rect = { x + j * scale, y + i * scale, scale, scale };
+                SDL_SetRenderDrawColor(renderer, color.r, color.g, color.b, 255);
+                SDL_RenderFillRect(renderer, &rect);
+            }
+        }
+    }
+}
+
+int main(int argc, char* argv[]) {
+    if (SDL_Init(SDL_INIT_VIDEO) < 0) {
+        std::cerr << "SDL could not initialize: " << SDL_GetError() << "\n";
+        return 1;
+    }
+
+    SDL_Window* window = SDL_CreateWindow("2.5D DOOM Models",
+        SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
+        WIDTH, HEIGHT, SDL_WINDOW_SHOWN);
+
+    if (!window) {
+        std::cerr << "Window could not be created: " << SDL_GetError() << "\n";
+        SDL_Quit();
+        return 1;
+    }
+
+    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+    if (!renderer) {
+        std::cerr << "Renderer could not be created: " << SDL_GetError() << "\n";
+        SDL_DestroyWindow(window);
+        SDL_Quit();
+        return 1;
+    }
+
+    bool running = true;
+    SDL_Event event;
+
+    // Example "distances" for 2.5D scaling
+    int enemy_distance = 10;  // smaller = closer
+    int health_distance = 20;
+
+    while (running) {
+        while (SDL_PollEvent(&event)) {
+            if (event.type == SDL_QUIT) running = false;
+        }
+
+        // Clear screen
+        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
+        SDL_RenderClear(renderer);
+
+        // Calculate scale based on distance
+        int enemy_scale = 50 / enemy_distance;  // bigger = closer
+        int health_scale = 50 / health_distance;
+
+        // Draw enemy and health
+        draw_sprite(renderer, enemy_sprite, 50, 50, enemy_scale, {255, 0, 0, 255});
+        draw_sprite(renderer, health_sprite, 200, 50, health_scale, {0, 255, 0, 255});
+
+        SDL_RenderPresent(renderer);
+
+        SDL_Delay(16); // ~60 FPS
+    }
+
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return 0;
+}