1 files changed, 102 insertions, 0 deletions
diff --git a/src/game/client/gc_mapres_tilemap.cpp b/src/game/client/gc_mapres_tilemap.cpp
new file mode 100644
index 00000000..6e687495
--- /dev/null
+++ b/src/game/client/gc_mapres_tilemap.cpp
@@ -0,0 +1,102 @@
+/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */
+#include <engine/e_interface.h>
+#include <engine/e_config.h>
+#include "gc_mapres_tilemap.h"
+#include "gc_mapres_image.h"
+#include "../g_mapres.h"
+
+int tilemap_init()
+{
+	return 0;
+}
+
+void tilemap_render(float scale, int fg)
+{
+	if(!map_is_loaded())
+		return;
+	
+	float screen_x0, screen_y0, screen_x1, screen_y1;
+	gfx_getscreen(&screen_x0, &screen_y0, &screen_x1, &screen_y1);
+	
+	// fetch indecies
+	int start, num;
+	map_get_type(MAPRES_TILEMAP, &start, &num);
+
+	// render tilemaps
+	int passed_main = 0;
+	for(int t = 0; t < num; t++)
+	{
+		mapres_tilemap *tmap = (mapres_tilemap *)map_get_item(start+t,0,0);
+		unsigned char *data = (unsigned char *)map_get_data(tmap->data);
+		
+		if(tmap->main)
+			passed_main = 1;
+			
+		if((fg && passed_main) || (!fg && !passed_main))
+		{
+			if(!config.gfx_high_detail && !tmap->main)
+				continue;
+			gfx_texture_set(img_get(tmap->image));
+			
+			gfx_quads_begin();
+			
+			int starty = (int)(screen_y0/scale)-1;
+			int startx = (int)(screen_x0/scale)-1;
+			int endy = (int)(screen_y1/scale)+1;
+			int endx = (int)(screen_x1/scale)+1;
+			
+			float frac = (1.25f/1024.0f);//2.0f; //2.0f;
+			float texsize = 1024.0f;
+			float nudge = 0.5f/texsize;
+			for(int y = starty; y < endy; y++)
+				for(int x = startx; x < endx; x++)
+				{
+					int mx = x;
+					int my = y;
+					if(mx<0) mx = 0;
+					if(mx>=tmap->width) mx = tmap->width-1;
+					if(my<0) my = 0;
+					if(my>=tmap->height) my = tmap->height-1;
+					
+					int c = mx + my*tmap->width;
+						
+					unsigned char d = data[c*2];
+					unsigned char f = data[c*2+1];
+					if(d)
+					{
+						int tx = d%16;
+						int ty = d/16;
+						int px0 = tx*(1024/16);
+						int py0 = ty*(1024/16);
+						int px1 = (tx+1)*(1024/16)-1;
+						int py1 = (ty+1)*(1024/16)-1;
+						
+						float u0 = nudge + px0/texsize+frac;
+						float v0 = nudge + py0/texsize+frac;
+						float u1 = nudge + px1/texsize-frac;
+						float v1 = nudge + py1/texsize-frac;
+						
+						if(f&TILEFLAG_VFLIP)
+						{
+							float tmp = u0;
+							u0 = u1;
+							u1 = tmp;
+						}
+
+						if(f&TILEFLAG_HFLIP)
+						{
+							float tmp = v0;
+							v0 = v1;
+							v1 = tmp;
+						}
+						
+						gfx_quads_setsubset(u0,v0,u1,v1);
+
+						gfx_quads_drawTL(x*scale, y*scale, scale, scale);
+					}
+				}
+			
+			gfx_quads_end();
+		}
+	}
+}