lø. 22. mars 13:04:12 +0100 2025

main.cpp

@@ -101,11 +101,64 @@ int main(int /*argc*/, char */*argv*/[])
                     mapY += stepY;
                     side = 1;
                 }
-                if(worldMap[mapX][mapY] > 0) hit = 1;
-                if(side == 0) perpWallDist = (sideDistX - deltaDistX);
-                else perpWallDist = (sideDistY - deltaDistY);
-                int lineHeight = (int)(h /perpWallDist);
             }
+            if(worldMap[mapX][mapY] > 0) hit = 1;
+            if(side == 0) perpWallDist = (sideDistX - deltaDistX);
+            else perpWallDist = (sideDistY - deltaDistY);
+            int lineHeight = (int)(h / perpWallDist);
+            int drawStart = -lineHeight / 2 + h / 2;
+            if(drawStart < 0) drawStart = 0;
+            int drawEnd = lineHeight / 2 + h / 2;
+            if(drawEnd >= h) drawEnd = h - 1;
+            ColorRGB color;
+            switch(worldMap[mapX][mapY])
+            {
+                case 1: color = RGB_Red; break;
+                case 2: color = RGB_Green; break;
+                case 3: color = RGB_Blue; break;
+                case 4: color = RGB_White; break;
+                default: colort = RGB_Yellow; break;
+            }
+            if(side == 1) {color = color / 2;}
+            verLine(x, drawStart, drawEnd, color);
+        }
+        oldTime = time;
+        time = getTicks();
+        double frameTime = (time - oldTime) / 1000.0;
+        print(1.0 / frameTime);
+        redraw();
+        cls();
+
+        double moveSpeed = frameTime * 5.0;
+        double rotSpeed = frameTime * 3.0;
+        readKeys();
+        if(keyDown(SDLK_UP))
+        {
+            if(worldMap[int(posX + dirX * moveSpeed)][int(posY)] == false) posX += dirX * moveSpeed;
+            if(worldMap[int(posX)][int(posY + dirY * moveSpeed)] == false) posY += dirY * moveSpeed;
+        }
+        if(keyDown(SDLK_DOWN))
+        {
+            if(worldMap[int(posX - dirX * moveSpeed)][int(posY)] == false) posX -= dirX * moveSpeed;
+            if(worldMap[int(posX)][int(posY - dirY * moveSpeed)] == false) posY -= dirY * moveSpeed;
+        }
+        if(keyDown(SDLK_RIGHT))
+        {
+            double oldDirX = dirX;
+            dirX = dirC * cos(-rotSpeed) - dirY * sin(-rotSpeed);
+            dirY = oldDirX * sin(-rotSpeed) + dirY * cos(-rotSpeed);
+            double oldPlaneX = planeX;
+            planeX = planeX * cos(-rotSpeed) - planeY * sin(-rotSpeed);
+            planeY = oldPlaneX * sin(-rotSpeed) + planeY * cos(-rotSpeed);
+        }
+        if(keyDown(SDLK_LEFT))
+        {
+            double oldDirX = dirX;
+            dirX = dirX * cos(rotSpeed) - dirY * sin(rotSpeed);
+            dirY = oldDirX * sin(rotSpeed) + dirY * cos(rotSpeed);
+            double oldPlaneX = planeX;
+            planeX = planeX * cos(rotSpeed) - planeY * sin(rotSpeed);
+            planeY = oldPlaneX * sin(rotSpeed) + planeY * cos(rotSpeed);
         }
     }
 }