Added TeeWorlds - it compiles but does not work yet (crashed my Evo yay!)

project/jni/application/teeworlds/src/game/collision.cpp

@@ -0,0 +1,87 @@
+/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */
+#include <base/system.h>
+#include <base/math.hpp>
+#include <base/vmath.hpp>
+
+#include <math.h>
+#include <engine/e_common_interface.h>
+#include <game/mapitems.hpp>
+#include <game/layers.hpp>
+#include <game/collision.hpp>
+
+static TILE *tiles;
+static int width = 0;
+static int height = 0;
+
+int col_width() { return width; }
+int col_height() { return height; }
+
+int col_init()
+{
+	width = layers_game_layer()->width;
+	height = layers_game_layer()->height;
+	tiles = (TILE *)map_get_data(layers_game_layer()->data);
+	
+	for(int i = 0; i < width*height; i++)
+	{
+		int index = tiles[i].index;
+		
+		if(index > 128)
+			continue;
+		
+		if(index == TILE_DEATH)
+			tiles[i].index = COLFLAG_DEATH;
+		else if(index == TILE_SOLID)
+			tiles[i].index = COLFLAG_SOLID;
+		else if(index == TILE_NOHOOK)
+			tiles[i].index = COLFLAG_SOLID|COLFLAG_NOHOOK;
+		else
+			tiles[i].index = 0;
+	}
+				
+	return 1;
+}
+
+
+int col_get(int x, int y)
+{
+	int nx = clamp(x/32, 0, width-1);
+	int ny = clamp(y/32, 0, height-1);
+	
+	if(tiles[ny*width+nx].index > 128)
+		return 0;
+	return tiles[ny*width+nx].index;
+}
+
+int col_is_solid(int x, int y)
+{
+	return col_get(x,y)&COLFLAG_SOLID;
+}
+
+
+// TODO: rewrite this smarter!
+int col_intersect_line(vec2 pos0, vec2 pos1, vec2 *out_collision, vec2 *out_before_collision)
+{
+	float d = distance(pos0, pos1);
+	vec2 last = pos0;
+	
+	for(float f = 0; f < d; f++)
+	{
+		float a = f/d;
+		vec2 pos = mix(pos0, pos1, a);
+		if(col_is_solid(round(pos.x), round(pos.y)))
+		{
+			if(out_collision)
+				*out_collision = pos;
+			if(out_before_collision)
+				*out_before_collision = last;
+			return col_get(round(pos.x), round(pos.y));
+		}
+		last = pos;
+	}
+	if(out_collision)
+		*out_collision = pos1;
+	if(out_before_collision)
+		*out_before_collision = pos1;
+	return 0;
+}