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POC# 2D collision detection problem
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  1. POC# 2D collision detection problem
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    copied!<p>I am stuck trying to figure out how to alter my collision detection to work correctly, i got all my wall objects stacked inside a List and then when the player moves i loop thru each wall object and call the DetectCollision method, this returns true or false depending on if the object is inside the wall or not.</p> <p>Wall detect collision (X- and Y-coordinate is the position of the wall)</p> <pre><code>public bool DetectCollision(float x, float y) { if ((x &gt;= this.XCoordinate &amp;&amp; x &lt;= (this.XCoordinate + this.BlockWidth)) &amp;&amp; (y &gt;= this.YCoordinate &amp;&amp; y &lt;= (this.YCoordinate + this.BlockHeight))) return true; else return false; } </code></pre> <p>So in my player function when the player tries to move, i add the movement to a temporary X,Y coordinate and check if those Collide against the wall, if they do nothing happens, otherwise i move the player.</p> <p>But i have noticed that it doesn't work as it should be, if i add a piece of wall inside of the gamefield it only checks the bottom right corner for collision detection?</p> <p>Player movement method:</p> <pre><code> float x, y; if (direction == Direction.E) { x = LiveObjects.player.XCoordinate - MovementSpeed; y = LiveObjects.player.YCoordinate; } else if (direction == Direction.W) { x = LiveObjects.player.XCoordinate + MovementSpeed; y = LiveObjects.player.YCoordinate; } else if (direction == Direction.N) { x = LiveObjects.player.XCoordinate; y = LiveObjects.player.YCoordinate - MovementSpeed; } else { x = LiveObjects.player.XCoordinate; y = LiveObjects.player.YCoordinate + MovementSpeed; } if (GameMechanics.DetectWallCollision(x, y) || GameMechanics.DetectWallCollision((x + LiveObjects.player.BlockWidth), (y + LiveObjects.player.BlockHeight)) { OnPlayerInvalidMove(null, new PlayerEventArgs()); return; } </code></pre> <p>and the loop for DetectWallCollision is just:</p> <pre><code>foreach (Wall wall in LiveObjects.walls) { if (wall.DetectCollision(x, y)) return true; } return false; </code></pre> <p>Any ideas?</p>
 

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