Create Example_-_Collision_map.c

Example_-_Collision_map.c

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+
+#include "raylib.h"
+
+
+typedef struct player{
+    Vector2 position;
+}player;
+
+int main(void)
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    const int screenWidth = 800;
+    const int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib example.");
+
+    // Our player setup
+    player myplayer = {0};
+    myplayer.position = (Vector2){5,5};
+
+    // Our tile width and height. We use the screen dimension and the map dimension to 
+    // get tile dimensions that fill up the entire screen.
+    float tilewidth = (float)screenWidth/20.0f;
+    float tileheight = (float)screenHeight/10.0f;
+
+    // This is out collision map.
+    bool colmap[20][20] = {false};
+    // This is our tile map.
+    int map[10][20] = { {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1},
+                        {1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,1,1,1,1},
+                        {1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1},
+                        {1,0,0,0,0,0,0,0,0,0,0,1,0,0,0,1,1,1,1,1},
+                        {1,1,1,1,1,1,1,1,0,1,1,1,1,0,0,1,1,1,1,1},
+                        {1,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,1},
+                        {1,0,0,0,0,0,0,1,0,0,0,1,0,0,0,0,0,0,0,1},
+                        {1,0,0,0,0,0,0,0,0,0,0,1,1,1,1,0,0,0,0,1},
+                        {1,0,0,0,0,0,0,1,0,0,0,1,1,1,1,0,0,0,0,1},
+                        {1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1}};    
+    // Copy the contents of the map into the collision map. 
+    for(int y=0;y<10;y++){
+        for(int x=0;x<20;x++){
+            if(map[y][x]>0)colmap[y][x]=true;
+        }
+    }
+    
+    SetTargetFPS(60);               // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+
+    // Main game loop
+    while (!WindowShouldClose())    // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        
+        // Below here we read the key. If the l/r/u/d cursor is pressed then we check the new position is inside
+        // the array bounds and then we check if the collision map on the new position is not set to flag true on that tile.
+        if(IsKeyPressed(KEY_RIGHT)&& myplayer.position.x+1<20 && colmap[(int)myplayer.position.y][(int)myplayer.position.x+1]==false) {
+            myplayer.position.x+=1;
+        }
+        if(IsKeyPressed(KEY_LEFT) && myplayer.position.x-1>-1 && colmap[(int)myplayer.position.y][(int)myplayer.position.x-1]==false) {
+            myplayer.position.x-=1;
+        }
+        if(IsKeyPressed(KEY_UP)&& myplayer.position.y-1>-1 && colmap[(int)myplayer.position.y-1][(int)myplayer.position.x]==false) {
+            myplayer.position.y-=1;
+        }
+        if(IsKeyPressed(KEY_DOWN) && myplayer.position.y+1<20 && colmap[(int)myplayer.position.y+1][(int)myplayer.position.x]==false) {
+            myplayer.position.y+=1;
+        }
+
+        //----------------------------------------------------------------------------------
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+                
+            // Draw our tilemap.
+            for(int y=0;y<10;y++){
+                for(int x=0;x<20;x++){
+                    if(map[y][x]==1){
+                        DrawRectangle(x*tilewidth,y*tileheight,tilewidth,tileheight,BLACK);
+                    }
+                }
+            }
+            // Draw our player
+            DrawRectangle(myplayer.position.x*tilewidth,myplayer.position.y*tileheight,tilewidth,tileheight,RED);
+            
+            DrawText("Use Cursor Keys to move around..",0,0,20,WHITE);
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    CloseWindow();        // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+
+
+}