cleaned up code structure a bit

1 files changed, 0 insertions, 1018 deletions

diff --git a/src/engine/client/gfx.c b/src/engine/client/gfx.c
deleted file mode 100644
index c61f0cb1..00000000
--- a/src/engine/client/gfx.c
+++ /dev/null
@@ -1,1018 +0,0 @@
-/* copyright (c) 2007 magnus auvinen, see licence.txt for more info */
-#include <engine/external/glfw/include/GL/glfw.h>
-#include <engine/external/pnglite/pnglite.h>
-
-#include <engine/system.h>
-#include <engine/interface.h>
-#include <engine/engine.h>
-#include <engine/config.h>
-#include <engine/keys.h>
-
-#include <string.h>
-#include <stdio.h>
-#include <math.h>
-
-/* compressed textures */
-#define GL_COMPRESSED_RGB_ARB 0x84ED
-#define GL_COMPRESSED_RGBA_ARB 0x84EE
-
-enum
-{
-	DRAWING_QUADS=1,
-	DRAWING_LINES=2
-};
-
-/* */
-typedef struct { float x, y, z; } VEC3;
-typedef struct { float u, v; } TEXCOORD;
-typedef struct { float r, g, b, a; } COLOR;
-
-typedef struct
-{
-	VEC3 pos;
-	TEXCOORD tex;
-	COLOR color;
-} VERTEX;
-
-const int vertex_buffer_size = 32*1024;
-static VERTEX *vertices = 0;
-static int num_vertices = 0;
-
-static COLOR color[4];
-static TEXCOORD texture[4];
-
-static int do_screenshot = 0;
-
-static int screen_width = -1;
-static int screen_height = -1;
-static float rotation = 0;
-static int drawing = 0;
-
-static float screen_x0 = 0;
-static float screen_y0 = 0;
-static float screen_x1 = 0;
-static float screen_y1 = 0;
-
-typedef struct
-{
-	GLuint tex;
-	int memsize;
-	int flags;
-	int next;
-} TEXTURE;
-
-
-enum
-{
-	MAX_TEXTURES = 128
-};
-
-static TEXTURE textures[MAX_TEXTURES];
-static int first_free_texture;
-static int memory_usage = 0;
-
-static const unsigned char null_texture_data[] = {
-	0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0x00,0xff,0x00,0xff, 0x00,0xff,0x00,0xff, 
-	0xff,0x00,0x00,0xff, 0xff,0x00,0x00,0xff, 0x00,0xff,0x00,0xff, 0x00,0xff,0x00,0xff, 
-	0x00,0x00,0xff,0xff, 0x00,0x00,0xff,0xff, 0xff,0xff,0x00,0xff, 0xff,0xff,0x00,0xff, 
-	0x00,0x00,0xff,0xff, 0x00,0x00,0xff,0xff, 0xff,0xff,0x00,0xff, 0xff,0xff,0x00,0xff, 
-};
-
-
-typedef struct
-{
-	float m_CharStartTable[256];
-	float m_CharEndTable[256];
-	int font_texture;
-} pretty_font;
-
-pretty_font default_font = 
-{
-{
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-        0, 0.421875, 0.359375, 0.265625, 0.25, 0.1875, 0.25, 0.4375, 0.390625, 0.390625, 0.34375, 0.28125, 0.421875, 0.390625, 0.4375, 0.203125, 
-        0.265625, 0.28125, 0.28125, 0.265625, 0.25, 0.28125, 0.28125, 0.265625, 0.28125, 0.265625, 0.4375, 0.421875, 0.3125, 0.28125, 0.3125, 0.3125, 
-        0.25, 0.234375, 0.28125, 0.265625, 0.265625, 0.296875, 0.3125, 0.25, 0.25, 0.421875, 0.28125, 0.265625, 0.328125, 0.171875, 0.234375, 0.25, 
-        0.28125, 0.234375, 0.265625, 0.265625, 0.28125, 0.265625, 0.234375, 0.09375, 0.234375, 0.234375, 0.265625, 0.390625, 0.203125, 0.390625, 0.296875, 0.28125, 
-        0.375, 0.3125, 0.3125, 0.3125, 0.296875, 0.3125, 0.359375, 0.296875, 0.3125, 0.4375, 0.390625, 0.328125, 0.4375, 0.203125, 0.3125, 0.296875, 
-        0.3125, 0.296875, 0.359375, 0.3125, 0.328125, 0.3125, 0.296875, 0.203125, 0.296875, 0.296875, 0.328125, 0.375, 0.421875, 0.375, 0.28125, 0.3125, 
-        0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 
-        0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 
-        0, 0.421875, 0.3125, 0.265625, 0.25, 0.25, 0.421875, 0.265625, 0.375, 0.21875, 0.375, 0.328125, 0.3125, 0, 0.21875, 0.28125, 
-        0.359375, 0.28125, 0.34375, 0.34375, 0.421875, 0.3125, 0.265625, 0.421875, 0.421875, 0.34375, 0.375, 0.328125, 0.125, 0.125, 0.125, 0.296875, 
-        0.234375, 0.234375, 0.234375, 0.234375, 0.234375, 0.234375, 0.109375, 0.265625, 0.296875, 0.296875, 0.296875, 0.296875, 0.375, 0.421875, 0.359375, 0.390625, 
-        0.21875, 0.234375, 0.25, 0.25, 0.25, 0.25, 0.25, 0.296875, 0.21875, 0.265625, 0.265625, 0.265625, 0.265625, 0.234375, 0.28125, 0.3125, 
-        0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.1875, 0.3125, 0.3125, 0.3125, 0.3125, 0.3125, 0.375, 0.421875, 0.359375, 0.390625, 
-        0.3125, 0.3125, 0.296875, 0.296875, 0.296875, 0.296875, 0.296875, 0.28125, 0.28125, 0.3125, 0.3125, 0.3125, 0.3125, 0.296875, 0.3125, 0.296875, 
-},
-{
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 
-        0.2, 0.5625, 0.625, 0.71875, 0.734375, 0.796875, 0.765625, 0.546875, 0.59375, 0.59375, 0.65625, 0.703125, 0.546875, 0.59375, 0.5625, 0.6875, 
-        0.71875, 0.609375, 0.703125, 0.703125, 0.71875, 0.703125, 0.703125, 0.6875, 0.703125, 0.703125, 0.5625, 0.546875, 0.671875, 0.703125, 0.671875, 0.671875, 
-        0.734375, 0.75, 0.734375, 0.734375, 0.734375, 0.6875, 0.6875, 0.734375, 0.71875, 0.5625, 0.65625, 0.765625, 0.703125, 0.8125, 0.75, 0.734375, 
-        0.734375, 0.765625, 0.71875, 0.71875, 0.703125, 0.71875, 0.75, 0.890625, 0.75, 0.75, 0.71875, 0.59375, 0.6875, 0.59375, 0.6875, 0.703125, 
-        0.5625, 0.671875, 0.6875, 0.671875, 0.671875, 0.671875, 0.625, 0.671875, 0.671875, 0.5625, 0.546875, 0.703125, 0.5625, 0.78125, 0.671875, 0.671875, 
-        0.6875, 0.671875, 0.65625, 0.671875, 0.65625, 0.671875, 0.6875, 0.78125, 0.6875, 0.671875, 0.65625, 0.609375, 0.546875, 0.609375, 0.703125, 0.671875, 
-        0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 
-        0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 
-        0, 0.5625, 0.671875, 0.734375, 0.734375, 0.734375, 0.546875, 0.71875, 0.609375, 0.765625, 0.609375, 0.65625, 0.671875, 0, 0.765625, 0.703125, 
-        0.625, 0.703125, 0.640625, 0.640625, 0.609375, 0.671875, 0.703125, 0.546875, 0.5625, 0.578125, 0.609375, 0.65625, 0.859375, 0.859375, 0.859375, 0.671875, 
-        0.75, 0.75, 0.75, 0.75, 0.75, 0.75, 0.84375, 0.734375, 0.6875, 0.6875, 0.6875, 0.6875, 0.5625, 0.609375, 0.640625, 0.59375, 
-        0.734375, 0.75, 0.734375, 0.734375, 0.734375, 0.734375, 0.734375, 0.6875, 0.765625, 0.71875, 0.71875, 0.71875, 0.71875, 0.75, 0.734375, 0.6875, 
-        0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.796875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.5625, 0.609375, 0.625, 0.59375, 
-        0.6875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.703125, 0.703125, 0.671875, 0.671875, 0.671875, 0.671875, 0.671875, 0.6875, 0.671875, 
-},
-0
-};
-
-double extra_kerning[256*256] = {0};
-
-pretty_font *current_font = &default_font;
-
-static void flush()
-{
-	if(num_vertices == 0)
-		return;
-		
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
-	glVertexPointer(3, GL_FLOAT,
-			sizeof(VERTEX),
-			(char*)vertices);
-	glTexCoordPointer(2, GL_FLOAT,
-			sizeof(VERTEX),
-			(char*)vertices + sizeof(float)*3);
-	glColorPointer(4, GL_FLOAT,
-			sizeof(VERTEX),
-			(char*)vertices + sizeof(float)*5);
-	glEnableClientState(GL_VERTEX_ARRAY);
-	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
-	glEnableClientState(GL_COLOR_ARRAY);
-	
-	if(drawing == DRAWING_QUADS)
-		glDrawArrays(GL_QUADS, 0, num_vertices);
-	else if(drawing == DRAWING_LINES)
-		glDrawArrays(GL_LINES, 0, num_vertices);
-	
-	/* Reset pointer */
-	num_vertices = 0;	
-}
-
-static void draw_line()
-{
-	num_vertices += 2;
-	if((num_vertices + 2) >= vertex_buffer_size)
-		flush();
-}
-
-static void draw_quad()
-{
-	num_vertices += 4;
-	if((num_vertices + 4) >= vertex_buffer_size)
-		flush();
-}
-
-
-int gfx_init()
-{
-	int i;
-
-	screen_width = config.gfx_screen_width;
-	screen_height = config.gfx_screen_height;
-
-	glfwInit();
-
-	if(config.dbg_stress)
-	{
-		screen_width = 320;
-		screen_height = 240;
-	}
-
-	/* set antialiasing	*/
-	if(config.gfx_fsaa_samples)
-		glfwOpenWindowHint(GLFW_FSAA_SAMPLES, config.gfx_fsaa_samples);
-	
-	/* set refresh rate */
-	if(config.gfx_refresh_rate)
-		glfwOpenWindowHint(GLFW_REFRESH_RATE, config.gfx_refresh_rate);
-	
-	/* no resizing allowed */
-	glfwOpenWindowHint(GLFW_WINDOW_NO_RESIZE, 1);
-		
-	/* open window */	
-	if(config.gfx_fullscreen)
-	{
-		int result = glfwOpenWindow(screen_width, screen_height, 8, 8, 8, 0, 24, 0, GLFW_FULLSCREEN);
-		if(result != GL_TRUE)
-		{
-			dbg_msg("game", "failed to create gl context");
-			return 0;
-		}
-	}
-	else
-	{
-		int result = glfwOpenWindow(screen_width, screen_height, 0, 0, 0, 0, 24, 0, GLFW_WINDOW);
-		if(result != GL_TRUE)
-		{
-			dbg_msg("game", "failed to create gl context");
-			return 0;
-		}
-	}
-	
-	glGetIntegerv(GL_DEPTH_BITS, &i);
-	dbg_msg("gfx", "depthbits = %d", i);
-	
-	glfwSetWindowTitle("Teewars");
-	
-	/* We don't want to see the window when we run the stress testing */
-	if(config.dbg_stress)
-		glfwIconifyWindow();
-	
-	/* Init vertices */
-	if (vertices)
-		mem_free(vertices);
-	vertices = (VERTEX*)mem_alloc(sizeof(VERTEX) * vertex_buffer_size, 1);
-	num_vertices = 0;
-
-
-	/*
-	dbg_msg("gfx", "OpenGL version %d.%d.%d", context.version_major(),
-											  context.version_minor(),
-											  context.version_rev());*/
-
-	gfx_mapscreen(0,0,config.gfx_screen_width, config.gfx_screen_height);
-
-	/* set some default settings */	
-	glEnable(GL_BLEND);
-	glDisable(GL_CULL_FACE);
-	glDisable(GL_DEPTH_TEST);
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-	gfx_mask_op(MASK_NONE, 0);
-	
-	/* Set all z to -5.0f */
-	for (i = 0; i < vertex_buffer_size; i++)
-		vertices[i].pos.z = -5.0f;
-
-	/* init textures */
-	first_free_texture = 0;
-	for(i = 0; i < MAX_TEXTURES; i++)
-		textures[i].next = i+1;
-	textures[MAX_TEXTURES-1].next = -1;
-	
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
-	/* init input */
-	inp_init();
-	
-	/* create null texture, will get id=0 */
-	gfx_load_texture_raw(4,4,IMG_RGBA,null_texture_data);
-
-	/* set vsync as needed */
-	gfx_set_vsync(config.gfx_vsync);
-
-	/* UGLY as hell, please remove */
-    current_font->font_texture = gfx_load_texture("data/big_font.png");
-
-	return 1;
-}
-
-float gfx_screenaspect()
-{
-    return gfx_screenwidth()/(float)gfx_screenheight();
-}
-
-void gfx_clear_mask(int fill)
-{
-	/*if(fill)
-		glClearDepth(0.0f);
-	else*/
-	
-	int i;
-	glGetIntegerv(GL_DEPTH_WRITEMASK, &i);
-	glDepthMask(GL_TRUE);
-	glClearDepth(0.0f);
-	glClear(GL_DEPTH_BUFFER_BIT);
-	glDepthMask(i);
-}
-
-void gfx_mask_op(int mask, int write)
-{
-	glEnable(GL_DEPTH_TEST);
-	
-	if(write)
-		glDepthMask(GL_TRUE);
-	else
-		glDepthMask(GL_FALSE);
-	
-	if(mask == MASK_NONE)
-		glDepthFunc(GL_ALWAYS);
-	else if(mask == MASK_SET)
-		glDepthFunc(GL_LEQUAL);
-	else if(mask == MASK_ZERO)
-		glDepthFunc(GL_NOTEQUAL);
-}
-
-int gfx_window_active()
-{
-	return glfwGetWindowParam(GLFW_ACTIVE) == GL_TRUE ? 1 : 0;
-}
-
-int gfx_window_open()
-{
-	return glfwGetWindowParam(GLFW_OPENED) == GL_TRUE ? 1 : 0;
-}
-
-VIDEO_MODE fakemodes[] = {
-	{320,240,8,8,8}, {400,300,8,8,8}, {640,480,8,8,8},
-	{720,400,8,8,8}, {768,576,8,8,8}, {800,600,8,8,8},
-	{1024,600,8,8,8}, {1024,768,8,8,8}, {1152,864,8,8,8},
-	{1280,768,8,8,8}, {1280,800,8,8,8}, {1280,960,8,8,8},
-	{1280,1024,8,8,8}, {1368,768,8,8,8}, {1400,1050,8,8,8},
-	{1440,900,8,8,8}, {1440,1050,8,8,8}, {1600,1000,8,8,8},
-	{1600,1200,8,8,8}, {1680,1050,8,8,8}, {1792,1344,8,8,8},
-	{1800,1440,8,8,8}, {1856,1392,8,8,8}, {1920,1080,8,8,8},
-	{1920,1200,8,8,8}, {1920,1440,8,8,8}, {1920,2400,8,8,8},
-	{2048,1536,8,8,8},
-		
-	{320,240,5,6,5}, {400,300,5,6,5}, {640,480,5,6,5},
-	{720,400,5,6,5}, {768,576,5,6,5}, {800,600,5,6,5},
-	{1024,600,5,6,5}, {1024,768,5,6,5}, {1152,864,5,6,5},
-	{1280,768,5,6,5}, {1280,800,5,6,5}, {1280,960,5,6,5},
-	{1280,1024,5,6,5}, {1368,768,5,6,5}, {1400,1050,5,6,5},
-	{1440,900,5,6,5}, {1440,1050,5,6,5}, {1600,1000,5,6,5},
-	{1600,1200,5,6,5}, {1680,1050,5,6,5}, {1792,1344,5,6,5},
-	{1800,1440,5,6,5}, {1856,1392,5,6,5}, {1920,1080,5,6,5},
-	{1920,1200,5,6,5}, {1920,1440,5,6,5}, {1920,2400,5,6,5},
-	{2048,1536,5,6,5}
-};
-
-int gfx_get_video_modes(VIDEO_MODE *list, int maxcount)
-{
-	if(config.gfx_display_all_modes)
-	{
-		int count = sizeof(fakemodes)/sizeof(VIDEO_MODE);
-		mem_copy(list, fakemodes, sizeof(fakemodes));
-		if(maxcount < count)
-			count = maxcount;
-		return count;
-	}
-	
-	return glfwGetVideoModes((GLFWvidmode *)list, maxcount);
-}
-
-void gfx_set_vsync(int val)
-{
-	glfwSwapInterval(val);
-}
-
-int gfx_unload_texture(int index)
-{
-	glDeleteTextures(1, &textures[index].tex);
-	textures[index].next = first_free_texture;
-	memory_usage -= textures[index].memsize;
-	first_free_texture = index;
-	return 0;
-}
-
-void gfx_blend_normal()
-{
-	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-}
-
-void gfx_blend_additive()
-{
-	glBlendFunc(GL_SRC_ALPHA, GL_ONE);
-}
-
-int gfx_memory_usage() { return memory_usage; }
-
-static unsigned char sample(int w, int h, const unsigned char *data, int u, int v, int offset)
-{
-	return (data[(v*w+u)*4+offset]+
-	data[(v*w+u+1)*4+offset]+
-	data[((v+1)*w+u)*4+offset]+
-	data[((v+1)*w+u+1)*4+offset])/4;
-}
-
-int gfx_load_texture_raw(int w, int h, int format, const void *data)
-{
-	int mipmap = 1;
-	unsigned char *texdata = (unsigned char *)data;
-	unsigned char *tmpdata = 0;
-	int oglformat = 0;
-	int tex = 0;
-	
-	/* don't waste memory on texture if we are stress testing */
-	if(config.dbg_stress)
-		return -1;
-	
-	/* grab texture */
-	tex = first_free_texture;
-	first_free_texture = textures[tex].next;
-	textures[tex].next = -1;
-	
-	/* resample if needed */
-	if(config.gfx_texture_quality==0)
-	{
-		if(w > 16 && h > 16 && format == IMG_RGBA)
-		{
-			unsigned char *tmpdata;
-			int c = 0;
-			int x, y;
-
-			tmpdata = (unsigned char *)mem_alloc(w*h*4, 1);
-
-			w/=2;
-			h/=2;
-
-			for(y = 0; y < h; y++)
-				for(x = 0; x < w; x++, c++)
-				{
-					tmpdata[c*4] = sample(w*2, h*2, texdata, x*2,y*2, 0);
-					tmpdata[c*4+1] = sample(w*2, h*2, texdata, x*2,y*2, 1);
-					tmpdata[c*4+2] = sample(w*2, h*2, texdata, x*2,y*2, 2);
-					tmpdata[c*4+3] = sample(w*2, h*2, texdata, x*2,y*2, 3);
-				}
-			texdata = tmpdata;
-		}
-	}
-	
-	if(config.debug)
-		dbg_msg("gfx", "%d = %dx%d", tex, w, h);
-	
-	/* upload texture */
-	if(config.gfx_texture_compression)
-	{
-		oglformat = GL_COMPRESSED_RGBA_ARB;
-		if(format == IMG_RGB)
-			oglformat = GL_COMPRESSED_RGB_ARB;
-	}
-	else
-	{
-		oglformat = GL_RGBA;
-		if(format == IMG_RGB)
-			oglformat = GL_RGB;
-	}
-		
-	glGenTextures(1, &textures[tex].tex);
-	glBindTexture(GL_TEXTURE_2D, textures[tex].tex);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
-	gluBuild2DMipmaps(GL_TEXTURE_2D, oglformat, w, h, oglformat, GL_UNSIGNED_BYTE, texdata);
-	
-	/* calculate memory usage */
-	textures[tex].memsize = w*h*4;
-	if(mipmap)
-	{
-		while(w > 2 && h > 2)
-		{
-			w>>=1;
-			h>>=1;
-			textures[tex].memsize += w*h*4;
-		}
-	}
-	
-	memory_usage += textures[tex].memsize;
-	mem_free(tmpdata);
-	return tex;
-}
-/*
-int gfx_load_mip_texture_raw(int w, int h, int format, const void *data)
-{
-	// grab texture
-	int tex = first_free_texture;
-	first_free_texture = textures[tex].next;
-	textures[tex].next = -1;
-	
-	// set data and return
-	// TODO: should be RGBA, not BGRA
-	dbg_msg("gfx", "%d = %dx%d", tex, w, h);
-	dbg_assert(format == IMG_RGBA, "not an RGBA image");
-
-	unsigned mip_w = w;
-	unsigned mip_h = h;
-	unsigned level = 0;
-	const unsigned char *ptr = (const unsigned char*)data;
-	while(mip_w > 0 && mip_h > 0)
-	{
-		dbg_msg("gfx mip", "%d = %dx%d", level, mip_w, mip_h);
-		textures[tex].tex.data2d_mip(mip_w, mip_h, GL_RGBA, GL_RGBA, GL_UNSIGNED_BYTE, level, ptr);
-		level++;
-		ptr = ptr + mip_w*mip_h*4;
-		mip_w = mip_w>>1;
-		mip_h = mip_h>>1;
-	}
-	return tex;
-}
-*/
-
-/* simple uncompressed RGBA loaders */
-int gfx_load_texture(const char *filename)
-{
-	int l = strlen(filename);
-	IMAGE_INFO img;
-	if(l < 3)
-		return 0;
-	if(gfx_load_png(&img, filename))
-	{
-		int id = gfx_load_texture_raw(img.width, img.height, img.format, img.data);
-		mem_free(img.data);
-		return id;
-	}
-	
-	return 0;
-}
-
-int gfx_load_png(IMAGE_INFO *img, const char *filename)
-{
-	unsigned char *buffer;
-	png_t png;
-	
-	/* open file for reading */
-	png_init(0,0);
-
-	if(png_open_file(&png, filename) != PNG_NO_ERROR)
-	{
-		dbg_msg("game/png", "failed to open file. filename='%s'", filename);
-		return 0;
-	}
-	
-	if(png.depth != 8 || (png.color_type != PNG_TRUECOLOR && png.color_type != PNG_TRUECOLOR_ALPHA))
-	{
-		dbg_msg("game/png", "invalid format. filename='%s'", filename);
-		png_close_file(&png);
-	}
-		
-	buffer = (unsigned char *)mem_alloc(png.width * png.height * png.bpp, 1);
-	png_get_data(&png, buffer);
-	png_close_file(&png);
-	
-	img->width = png.width;
-	img->height = png.height;
-	if(png.color_type == PNG_TRUECOLOR)
-		img->format = IMG_RGB;
-	else if(png.color_type == PNG_TRUECOLOR_ALPHA)
-		img->format = IMG_RGBA;
-	img->data = buffer;
-	return 1;
-}
-
-void gfx_shutdown()
-{
-	if (vertices)
-		mem_free(vertices);
-	glfwCloseWindow();
-	glfwTerminate();
-}
-
-void gfx_screenshot()
-{
-	do_screenshot = 1;
-}
-
-void gfx_swap()
-{
-	if(do_screenshot)
-	{
-		/* fetch image data */
-		int y;
-		int w = screen_width;
-		int h = screen_height;
-		unsigned char *pixel_data = (unsigned char *)mem_alloc(w*(h+1)*3, 1);
-		unsigned char *temp_row = pixel_data+w*h*3;
-		glReadPixels(0,0, w, h, GL_RGB, GL_UNSIGNED_BYTE, pixel_data);
-		
-		/* flip the pixel because opengl works from bottom left corner */
-		for(y = 0; y < h/2; y++)
-		{
-			mem_copy(temp_row, pixel_data+y*w*3, w*3);
-			mem_copy(pixel_data+y*w*3, pixel_data+(h-y-1)*w*3, w*3);
-			mem_copy(pixel_data+(h-y-1)*w*3, temp_row,w*3);
-		}
-		
-		/* find filename */
-		{
-			char wholepath[1024];
-			char filename[128];
-			static int index = 1;
-			png_t png;
-
-			for(; index < 1000; index++)
-			{
-				IOHANDLE io;
-				sprintf(filename, "screenshots/screenshot%04d.png", index);
-				engine_savepath(filename, wholepath, sizeof(wholepath));
-				
-				io = io_open(wholepath, IOFLAG_READ);
-				if(io)
-					io_close(io);
-				else
-					break;
-			}
-		
-			/* save png */
-			dbg_msg("client", "saved screenshot to '%s'", wholepath);
-			png_open_file_write(&png, wholepath);
-			png_set_data(&png, w, h, 8, PNG_TRUECOLOR, (unsigned char *)pixel_data);
-			png_close_file(&png);
-		}
-
-		/* clean up */
-		mem_free(pixel_data);
-		do_screenshot = 0;
-	}
-	
-	glfwSwapBuffers();
-	glFinish();
-	glfwPollEvents();
-}
-
-int gfx_screenwidth()
-{
-	return screen_width;
-}
-
-int gfx_screenheight()
-{
-	return screen_height;
-}
-
-void gfx_texture_set(int slot)
-{
-	dbg_assert(drawing == 0, "called gfx_texture_set within begin");
-	if(slot == -1)
-		glDisable(GL_TEXTURE_2D);
-	else
-	{
-		glEnable(GL_TEXTURE_2D);
-		glBindTexture(GL_TEXTURE_2D, textures[slot].tex);
-	}
-}
-
-void gfx_clear(float r, float g, float b)
-{
-	glClearColor(r,g,b,1.0f);
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-}
-
-void gfx_mapscreen(float tl_x, float tl_y, float br_x, float br_y)
-{
-	screen_x0 = tl_x;
-	screen_y0 = tl_y;
-	screen_x1 = br_x;
-	screen_y1 = br_y;
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	glOrtho(tl_x, br_x, br_y, tl_y, 1.0f, 10.f);
-}
-
-void gfx_getscreen(float *tl_x, float *tl_y, float *br_x, float *br_y)
-{
-	*tl_x = screen_x0;
-	*tl_y = screen_y0;
-	*br_x = screen_x1;
-	*br_y = screen_y1;
-}
-
-void gfx_setoffset(float x, float y)
-{
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-	glTranslatef(x, y, 0);
-}
-
-
-void gfx_quads_begin()
-{
-	dbg_assert(drawing == 0, "called quads_begin twice");
-	drawing = DRAWING_QUADS;
-	
-	gfx_quads_setsubset(0,0,1,1);
-	gfx_quads_setrotation(0);
-	gfx_setcolor(1,1,1,1);
-}
-
-void gfx_quads_end()
-{
-	dbg_assert(drawing == DRAWING_QUADS, "called quads_end without begin");
-	flush();
-	drawing = 0;
-}
-
-
-void gfx_quads_setrotation(float angle)
-{
-	dbg_assert(drawing == DRAWING_QUADS, "called gfx_quads_setrotation without begin");
-	rotation = angle;
-}
-
-void gfx_setcolorvertex(int i, float r, float g, float b, float a)
-{
-	dbg_assert(drawing != 0, "called gfx_quads_setcolorvertex without begin");
-	color[i].r = r;
-	color[i].g = g;
-	color[i].b = b;
-	color[i].a = a;
-}
-
-void gfx_setcolor(float r, float g, float b, float a)
-{
-	dbg_assert(drawing != 0, "called gfx_quads_setcolor without begin");
-	gfx_setcolorvertex(0, r, g, b, a);
-	gfx_setcolorvertex(1, r, g, b, a);
-	gfx_setcolorvertex(2, r, g, b, a);
-	gfx_setcolorvertex(3, r, g, b, a);
-}
-
-void gfx_quads_setsubset(float tl_u, float tl_v, float br_u, float br_v)
-{
-	dbg_assert(drawing == DRAWING_QUADS, "called gfx_quads_setsubset without begin");
-
-	texture[0].u = tl_u;
-	texture[0].v = tl_v;
-
-	texture[1].u = br_u;
-	texture[1].v = tl_v;
-
-	texture[2].u = br_u;
-	texture[2].v = br_v;
-
-	texture[3].u = tl_u;
-	texture[3].v = br_v;
-}
-
-static void rotate(VEC3 *center, VEC3 *point)
-{
-	float x = point->x - center->x;
-	float y = point->y - center->y;
-	point->x = x * cosf(rotation) - y * sinf(rotation) + center->x;
-	point->y = x * sinf(rotation) + y * cosf(rotation) + center->y;
-}
-
-void gfx_quads_draw(float x, float y, float w, float h)
-{
-	gfx_quads_drawTL(x-w/2, y-h/2,w,h);
-}
-
-void gfx_quads_drawTL(float x, float y, float width, float height)
-{
-	VEC3 center;
-
-	dbg_assert(drawing == DRAWING_QUADS, "called quads_draw without begin");
-
-	center.x = x + width/2;
-	center.y = y + height/2;
-	center.z = 0;
-	
-	vertices[num_vertices].pos.x = x;
-	vertices[num_vertices].pos.y = y;
-	vertices[num_vertices].tex = texture[0];
-	vertices[num_vertices].color = color[0];
-	rotate(&center, &vertices[num_vertices].pos);
-
-	vertices[num_vertices + 1].pos.x = x+width;
-	vertices[num_vertices + 1].pos.y = y;
-	vertices[num_vertices + 1].tex = texture[1];
-	vertices[num_vertices + 1].color = color[1];
-	rotate(&center, &vertices[num_vertices + 1].pos);
-
-	vertices[num_vertices + 2].pos.x = x + width;
-	vertices[num_vertices + 2].pos.y = y+height;
-	vertices[num_vertices + 2].tex = texture[2];
-	vertices[num_vertices + 2].color = color[2];
-	rotate(&center, &vertices[num_vertices + 2].pos);
-
-	vertices[num_vertices + 3].pos.x = x;
-	vertices[num_vertices + 3].pos.y = y+height;
-	vertices[num_vertices + 3].tex = texture[3];
-	vertices[num_vertices + 3].color = color[3];
-	rotate(&center, &vertices[num_vertices + 3].pos);
-	
-	draw_quad();
-}
-
-void gfx_quads_draw_freeform(
-	float x0, float y0,
-	float x1, float y1,
-	float x2, float y2,
-	float x3, float y3)
-{
-	dbg_assert(drawing == DRAWING_QUADS, "called quads_draw_freeform without begin");
-	
-	vertices[num_vertices].pos.x = x0;
-	vertices[num_vertices].pos.y = y0;
-	vertices[num_vertices].tex = texture[0];
-	vertices[num_vertices].color = color[0];
-
-	vertices[num_vertices + 1].pos.x = x1;
-	vertices[num_vertices + 1].pos.y = y1;
-	vertices[num_vertices + 1].tex = texture[1];
-	vertices[num_vertices + 1].color = color[1];
-
-	vertices[num_vertices + 2].pos.x = x3;
-	vertices[num_vertices + 2].pos.y = y3;
-	vertices[num_vertices + 2].tex = texture[3];
-	vertices[num_vertices + 2].color = color[3];
-
-	vertices[num_vertices + 3].pos.x = x2;
-	vertices[num_vertices + 3].pos.y = y2;
-	vertices[num_vertices + 3].tex = texture[2];
-	vertices[num_vertices + 3].color = color[2];
-	
-	draw_quad();
-}
-
-void gfx_quads_text(float x, float y, float size, const char *text)
-{
-	float startx = x;
-
-	gfx_quads_begin();
-
-	while(*text)
-	{
-		char c = *text;
-		text++;
-		
-		if(c == '\n')
-		{
-			x = startx;
-			y += size;
-		}
-		else
-		{
-			gfx_quads_setsubset(
-				(c%16)/16.0f,
-				(c/16)/16.0f,
-				(c%16)/16.0f+1.0f/16.0f,
-				(c/16)/16.0f+1.0f/16.0f);
-			
-			gfx_quads_drawTL(x,y,size,size);
-			x += size/2;
-		}
-	}
-	
-	gfx_quads_end();
-}
-
-static int word_length(const char *text)
-{
-	int s = 1;
-	while(1)
-	{
-		if(*text == 0)
-			return s-1;
-		if(*text == '\n' || *text == '\t' || *text == ' ')
-			return s;
-		text++;
-		s++;
-	}
-}
-
-
-
-static float pretty_r=1;
-static float pretty_g=1;
-static float pretty_b=1;
-static float pretty_a=1;
-
-void gfx_pretty_text_color(float r, float g, float b, float a)
-{
-	pretty_r = r;
-	pretty_g = g;
-	pretty_b = b;
-	pretty_a = a;
-}
-
-float gfx_pretty_text_raw(float x, float y, float size, const char *text_, int length)
-{
-	const unsigned char *text = (unsigned char *)text_;
-	const float spacing = 0.05f;
-	gfx_texture_set(current_font->font_texture);
-	gfx_quads_begin();
-	gfx_setcolor(pretty_r, pretty_g, pretty_b, pretty_a);
-	
-	if(length < 0)
-		length = strlen(text_);
-	
-	while(length)
-	{
-		const int c = *text;
-		const float width = current_font->m_CharEndTable[c] - current_font->m_CharStartTable[c];
-		double x_nudge = 0;
-
-		text++;
-
-		x -= size * current_font->m_CharStartTable[c];
-		
-		gfx_quads_setsubset(
-			(c%16)/16.0f, /* startx */
-			(c/16)/16.0f, /* starty */
-			(c%16)/16.0f+1.0f/16.0f, /* endx */
-			(c/16)/16.0f+1.0f/16.0f); /* endy */
-
-		gfx_quads_drawTL(x, y, size, size);
-
-		if(length > 1 && text[1])
-			x_nudge = extra_kerning[text[0] + text[1] * 256];
-
-		x += (width + current_font->m_CharStartTable[c] + spacing + x_nudge) * size;
-		length--;
-	}
-
-	gfx_quads_end();
-	
-	return x;
-}
-
-
-
-void gfx_pretty_text(float x, float y, float size, const char *text, int max_width)
-{
-	if(max_width == -1)
-		gfx_pretty_text_raw(x, y, size, text, -1);
-	else
-	{
-		float startx = x;
-		while(*text)
-		{
-			int wlen = word_length(text);
-			float w = gfx_pretty_text_width(size, text, wlen);
-			if(x+w-startx > max_width)
-			{
-				y += size-2;
-				x = startx;
-			}
-			
-			x = gfx_pretty_text_raw(x, y, size, text, wlen);
-			
-			text += wlen;
-		}
-	}
-}
-
-float gfx_pretty_text_width(float size, const char *text_, int length)
-{
-	const float spacing = 0.05f;
-	float w = 0.0f;
-	const unsigned char *text = (unsigned char *)text_;
-	const unsigned char *stop;
-
-	if (length == -1)
-		stop = text + strlen((char*)text);
-	else
-		stop = text + length;
-
-	while (text < stop)
-	{
-		const int c = *text;
-		const float width = current_font->m_CharEndTable[c] - current_font->m_CharStartTable[c];
-
-		double x_nudge = 0;
-		if (text[1])
-			x_nudge = extra_kerning[text[0] + text[1] * 256];
-
-		w += (width + spacing + x_nudge) * size;
-
-		text++;
-	}
-
-	return w;
-}
-
-
-
-void gfx_lines_begin()
-{
-	dbg_assert(drawing == 0, "called begin twice");
-	drawing = DRAWING_LINES;
-	gfx_setcolor(1,1,1,1);
-}
-
-void gfx_lines_end()
-{
-	dbg_assert(drawing == DRAWING_LINES, "called end without begin");
-	flush();
-	drawing = 0;
-}
-
-void gfx_lines_draw(float x0, float y0, float x1, float y1)
-{
-	dbg_assert(drawing == DRAWING_LINES, "called draw without begin");
-	
-	vertices[num_vertices].pos.x = x0;
-	vertices[num_vertices].pos.y = y0;
-	vertices[num_vertices].tex = texture[0];
-	vertices[num_vertices].color = color[0];
-
-	vertices[num_vertices + 1].pos.x = x1;
-	vertices[num_vertices + 1].pos.y = y1;
-	vertices[num_vertices + 1].tex = texture[1];
-	vertices[num_vertices + 1].color = color[1];
-	
-	draw_line();
-}