Add IntersectLine to collision class

Author: ChillerDragon

src/twbl/teeworlds/collision.h

@@ -1,13 +1,16 @@
 #ifndef TWBL_SRC_TWBL_COLLISION_H
 #define TWBL_SRC_TWBL_COLLISION_H
 
+#include <twbl/teeworlds/base/vmath.h>
+
 #if __has_include(<game/collision.h>)
 #include <game/collision.h>
 #else
 class CCollision
 {
 public:
 	int GetTile(int x, int y) const { return -404; }
+	int IntersectLine(vec2 Pos0, vec2 Pos1, vec2 *pOutCollision, vec2 *pOutBeforeCollision) const { return -404; }
 };
 
 #endif