Function weapon_draw

TheForceEngine/TFE_DarkForces/weapon.cpp:989–1119

In DOS, this was part of drawWorld() - for TFE I split it out to limit the amount of game code in the renderer.

	// In DOS, this was part of drawWorld() - 
	// for TFE I split it out to limit the amount of game code in the renderer.
	void weapon_draw(u8* display, DrawRect* rect)
	{
		// TFE - don't draw weapon in external camera mode
		if (s_externalCameraMode)
		{
			return;
		}

		const fixed16_16 weaponLightingZDist  = FIXED(6);
		const fixed16_16 gasmaskLightingZDist = FIXED(2);

		PlayerWeapon* weapon = s_curPlayerWeapon;
		if (weapon && !s_weaponOffAnim)
		{
			s32 x = weapon->xPos[weapon->frame];
			s32 y = weapon->yPos[weapon->frame];
			if (weapon->flags & 1)
			{
				x += weapon->rollOffset;
				y += weapon->pchOffset;
			}
			if (weapon->flags & 2)
			{
				x += weapon->xWaveOffset;
				y += weapon->yWaveOffset;
			}
			if (weapon->flags & 4)
			{
				x += weapon->xOffset;
				y += weapon->yOffset;
			}
			
			const u8* atten = RClassic_Fixed::computeLighting(weaponLightingZDist, 0);
			TextureData* tex = weapon->frames[weapon->frame];
			if (weapon->ammo && *weapon->ammo == 0 && (weapon->ammo == &s_playerInfo.ammoDetonator || weapon->ammo == &s_playerInfo.ammoMine))
			{
				tex = s_playerWeaponList[WPN_FIST].frames[0];
			}
			
			u32 dispWidth, dispHeight;
			vfb_getResolution(&dispWidth, &dispHeight);

			if (dispWidth == 320 && dispHeight == 200 && TFE_Jedi::getSubRenderer() != TSR_CLASSIC_GPU)
			{
				if (atten && !s_weaponLight)
				{
					blitTextureToScreenLit(tex, rect, x, y, atten, display, JTRUE);
				}
				else
				{
					blitTextureToScreen(tex, rect, x, y, display, JTRUE);
				}
			}
			else
			{
				// HUD scaling.
				fixed16_16 xScale = vfb_getXScale();
				fixed16_16 yScale = vfb_getYScale();