Initial commit

engines/ags/plugins/ags_pal_render/ags_pal_render.h

@@ -0,0 +1,279 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * of the License, or(at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AGS_PLUGINS_AGS_PAL_RENDER_AGS_PAL_RENDER_H
+#define AGS_PLUGINS_AGS_PAL_RENDER_AGS_PAL_RENDER_H
+
+#include "ags/plugins/ags_plugin.h"
+#include "ags/plugins/serializer.h"
+
+namespace AGS3 {
+namespace Plugins {
+namespace AGSPalRender {
+
+class AGSPalRender : public PluginBase {
+	SCRIPT_HASH(AGSPalRender)
+private:
+	void syncGame(Serializer &s);
+public:
+	AGSPalRender() : PluginBase() {}
+	virtual ~AGSPalRender() {}
+
+	const char *AGS_GetPluginName() override;
+	void AGS_EngineStartup(IAGSEngine *lpEngine) override;
+	void AGS_EngineShutdown() override;
+	int64 AGS_EngineOnEvent(int event, NumberPtr data) override;
+
+	/**
+	 * @defgroup PALInternal
+	 * @{
+	 */
+
+	void LoadCLUT(ScriptMethodParams &params);
+	void CycleRemap(ScriptMethodParams &params);
+	void GetColor565(ScriptMethodParams &params);
+	void GetLuminosityFromPalette(ScriptMethodParams &params);
+	void AGSFastSin(ScriptMethodParams &params);
+	void AGSFastCos(ScriptMethodParams &params);
+	void AGSFastRoot(ScriptMethodParams &params);
+	void GetRemappedSlot(ScriptMethodParams &params);
+	void ResetRemapping(ScriptMethodParams &params);
+	void GetModifiedBackgroundImage(ScriptMethodParams &params);
+	void WriteObjectivePalette(ScriptMethodParams &params);
+	void ReadObjectivePaletteR(ScriptMethodParams &params);
+	void ReadObjectivePaletteB(ScriptMethodParams &params);
+	void ReadObjectivePaletteG(ScriptMethodParams &params);
+
+	/**@}*/
+
+	/**
+	 * @defgroup LensDistort
+	 * @{
+	 */
+
+	void SetLensPos(ScriptMethodParams &params);
+	void GetLensX(ScriptMethodParams &params);
+	void GetLensY(ScriptMethodParams &params);
+	void SetLensDrawn(ScriptMethodParams &params);
+	void GetLensDrawn(ScriptMethodParams &params);
+	void SetLensOffsetClamp(ScriptMethodParams &params);
+	void GetLensOffsetClamp(ScriptMethodParams &params);
+	void GetLensLevel(ScriptMethodParams &params);
+	void SetLensLevel(ScriptMethodParams &params);
+	void LensInitialize(ScriptMethodParams &params);
+
+	/**@}*/
+
+	/**
+	 * @defgroup Translucence
+	 * @{
+	 */
+
+	void CreateTranslucentOverlay(ScriptMethodParams &params);
+	void DeleteTranslucentOverlay(ScriptMethodParams &params);
+	void MoveTranslucentOverlay(ScriptMethodParams &params);
+	void GetTranslucentOverlayX(ScriptMethodParams &params);
+	void GetTranslucentOverlayY(ScriptMethodParams &params);
+	void GetTranslucentOverlaySprite(ScriptMethodParams &params);
+	void GetTranslucentOverlayLevel(ScriptMethodParams &params);
+	void GetTranslucentOverlayEnabled(ScriptMethodParams &params);
+	void GetTranslucentOverlayAlpha(ScriptMethodParams &params);
+	void SetTranslucentOverlayAlpha(ScriptMethodParams &params);
+	void SetTranslucentOverlayEnabled(ScriptMethodParams &params);
+	void DrawTransSprite(ScriptMethodParams &params);
+
+	 /**@}*/
+
+	/**
+	 * @defgroup Starfield
+	 * @{
+	 */
+
+	void GetStarfieldOverscan(ScriptMethodParams &params);
+	void SetStarfieldOverscan(ScriptMethodParams &params);
+	void GetStarfieldOriginX(ScriptMethodParams &params);
+	void GetStarfieldOriginY(ScriptMethodParams &params);
+	void SetStarfieldDepthMultiplier(ScriptMethodParams &params);
+	void GetStarfieldDepthMultiplier(ScriptMethodParams &params);
+	void GetStarfieldMaxStars(ScriptMethodParams &params);
+	void SetStarSpriteScaleBoost(ScriptMethodParams &params);
+	void GetStarSpriteScaleBoost(ScriptMethodParams &params);
+	void SetStarMaxRadius(ScriptMethodParams &params);
+	void GetStarMaxRadius(ScriptMethodParams &params);
+	void GetStarX(ScriptMethodParams &params);
+	void GetStarY(ScriptMethodParams &params);
+	void GetStarZ(ScriptMethodParams &params);
+	void SetStarPosition(ScriptMethodParams &params);
+	void RotateStar(ScriptMethodParams &params);
+	void SetStarColor(ScriptMethodParams &params);
+	void GetStarColor(ScriptMethodParams &params);
+	void SetStarSprite(ScriptMethodParams &params);
+	void GetStarSprite(ScriptMethodParams &params);
+	void SetStarSpriteRange(ScriptMethodParams &params);
+	void InitializeStars(ScriptMethodParams &params);
+	void IterateStars(ScriptMethodParams &params);
+	void DrawStars(ScriptMethodParams &params);
+	void SetStarsOriginPoint(ScriptMethodParams &params);
+
+	 /**@}*/
+
+	/**
+	 * @defgroup Plasma
+	 * @{
+	 */
+
+	void DoFire(ScriptMethodParams &params);
+	void SetPlasmaType(ScriptMethodParams &params);
+	void ResetPlasmaSettings(ScriptMethodParams &params);
+	void DrawPlasma(ScriptMethodParams &params);
+	void SetPlasmaRootType(ScriptMethodParams &params);
+	void GetPlasmaRootType(ScriptMethodParams &params);
+
+	 /**@}*/
+
+	/**
+	 * @defgroup Reflections
+	 * @{
+	 */
+
+	void SetReflections(ScriptMethodParams &params);
+	void IsReflectionsOn(ScriptMethodParams &params);
+	void SetCharacterReflected(ScriptMethodParams &params);
+	void GetCharacterReflected(ScriptMethodParams &params);
+	void SetObjectReflected(ScriptMethodParams &params);
+	void GetObjectReflected(ScriptMethodParams &params);
+	void ReplaceCharacterReflectionView(ScriptMethodParams &params);
+	void SetObjectReflectionIgnoreScaling(ScriptMethodParams &params);
+
+	 /**@}*/
+
+	/**
+	 * @defgroup raycast
+	 * @{
+	 */
+
+	void MakeTextures(ScriptMethodParams &params);
+	void Raycast_Render(ScriptMethodParams &params);
+	void MoveForward(ScriptMethodParams &params);
+	void MoveBackward(ScriptMethodParams &params);
+	void RotateLeft(ScriptMethodParams &params);
+	void RotateRight(ScriptMethodParams &params);
+	void Init_Raycaster(ScriptMethodParams &params);
+	void QuitCleanup(ScriptMethodParams &params);
+	void LoadMap(ScriptMethodParams &params);
+	void Ray_InitSprite(ScriptMethodParams &params);
+	void Ray_SetPlayerPosition(ScriptMethodParams &params);
+	void Ray_GetPlayerX(ScriptMethodParams &params);
+	void Ray_GetPlayerY(ScriptMethodParams &params);
+	void Ray_GetPlayerAngle(ScriptMethodParams &params);
+	void Ray_SetPlayerAngle(ScriptMethodParams &params);
+
+	void Ray_GetWallHotspot(ScriptMethodParams &params);
+	void Ray_GetWallTexture(ScriptMethodParams &params);
+	void Ray_GetWallSolid(ScriptMethodParams &params);
+	void Ray_GetWallIgnoreLighting(ScriptMethodParams &params);
+	void Ray_GetWallAlpha(ScriptMethodParams &params);
+	void Ray_GetWallBlendType(ScriptMethodParams &params);
+
+	void Ray_SelectTile(ScriptMethodParams &params);
+
+	void Ray_GetHotspotAt(ScriptMethodParams &params);
+	void Ray_GetObjectAt(ScriptMethodParams &params);
+
+	void Ray_DrawTile(ScriptMethodParams &params);
+	void Ray_DrawOntoTile(ScriptMethodParams &params);
+	void Ray_SetNoClip(ScriptMethodParams &params);
+	void Ray_GetNoClip(ScriptMethodParams &params);
+	void Ray_SetSpriteInteractObj(ScriptMethodParams &params);
+	void  Ray_GetSpriteInteractObj(ScriptMethodParams &params);
+	void Ray_SetSpritePosition(ScriptMethodParams &params);
+	void Ray_SetSpriteVertOffset(ScriptMethodParams &params);
+	void Ray_GetSpriteVertOffset(ScriptMethodParams &params);
+	void Ray_GetSpriteX(ScriptMethodParams &params);
+	void Ray_GetSpriteY(ScriptMethodParams &params);
+
+	void Ray_SetWallHotspot(ScriptMethodParams &params);
+	void Ray_SetWallTextures(ScriptMethodParams &params);
+	void Ray_SetWallSolid(ScriptMethodParams &params);
+	void Ray_SetWallIgnoreLighting(ScriptMethodParams &params);
+	void Ray_SetWallAlpha(ScriptMethodParams &params);
+	void Ray_SetWallBlendType(ScriptMethodParams &params);
+
+	void Ray_GetMoveSpeed(ScriptMethodParams &params);
+	void Ray_SetMoveSpeed(ScriptMethodParams &params);
+	void Ray_GetRotSpeed(ScriptMethodParams &params);
+	void Ray_SetRotSpeed(ScriptMethodParams &params);
+	void Ray_GetWallAt(ScriptMethodParams &params);
+	void Ray_GetLightAt(ScriptMethodParams &params);
+	void Ray_SetLightAt(ScriptMethodParams &params);
+	void Ray_SetWallAt(ScriptMethodParams &params);
+	void Ray_GetPlaneY(ScriptMethodParams &params);
+	void Ray_SetPlaneY(ScriptMethodParams &params);
+	void Ray_GetDistanceAt(ScriptMethodParams &params);
+	void Ray_GetSpriteAngle(ScriptMethodParams &params);
+	void Ray_SetSpriteAngle(ScriptMethodParams &params);
+	void Ray_SetSpriteView(ScriptMethodParams &params);
+	void Ray_GetSpriteView(ScriptMethodParams &params);
+	void Ray_SetSpriteFrame(ScriptMethodParams &params);
+	void Ray_GetSpriteFrame(ScriptMethodParams &params);
+
+	void Ray_GetTileX_At(ScriptMethodParams &params);
+	void Ray_GetTileY_At(ScriptMethodParams &params);
+
+	void Ray_SetSkyBox(ScriptMethodParams &params);
+	void Ray_GetSkyBox(ScriptMethodParams &params);
+
+	void Ray_SetAmbientLight(ScriptMethodParams &params);
+	void Ray_GetAmbientLight(ScriptMethodParams &params);
+	void Ray_SetAmbientColor(ScriptMethodParams &params);
+
+
+	void Ray_GetSpriteAlpha(ScriptMethodParams &params);
+	void Ray_SetSpriteAlpha(ScriptMethodParams &params);
+	void Ray_GetSpritePic(ScriptMethodParams &params);
+	void Ray_SetSpritePic(ScriptMethodParams &params);
+
+	void Ray_GetSpriteScaleX(ScriptMethodParams &params);
+	void Ray_SetSpriteScaleX(ScriptMethodParams &params);
+	void Ray_GetSpriteScaleY(ScriptMethodParams &params);
+	void Ray_SetSpriteScaleY(ScriptMethodParams &params);
+
+	void Ray_SetSpriteBlendType(ScriptMethodParams &params);
+	void Ray_GetSpriteBlendType(ScriptMethodParams &params);
+
+	void Ray_SetFloorAt(ScriptMethodParams &params);
+	void Ray_SetCeilingAt(ScriptMethodParams &params);
+	void Ray_GetCeilingAt(ScriptMethodParams &params);
+	void Ray_GetFloorAt(ScriptMethodParams &params);
+	void Ray_GetLightingAt(ScriptMethodParams &params);
+	void Ray_SetLightingAt(ScriptMethodParams &params);
+	void Ray_GetAmbientWeight(ScriptMethodParams &params);
+
+	void Ray_HasSeenTile(ScriptMethodParams &params);
+
+	/**@}*/
+};
+
+} // namespace AGSPalRender
+} // namespace Plugins
+} // namespace AGS3
+
+#endif

engines/ags/plugins/ags_pal_render/pal_render.h

@@ -0,0 +1,187 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * of the License, or(at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AGS_PLUGINS_AGS_PAL_RENDER_PAL_RENDER_H
+#define AGS_PLUGINS_AGS_PAL_RENDER_PAL_RENDER_H
+
+#include "ags/lib/allegro.h"
+#include "ags/plugins/ags_plugin.h"
+#include "ags/plugins/plugin_base.h"
+#include "common/algorithm.h"
+
+namespace AGS3 {
+namespace Plugins {
+namespace AGSPalRender {
+
+struct PALSTRUCT {
+	byte r;
+	byte b;
+	byte g;
+};
+
+extern IAGSEngine *engine;
+extern unsigned char clut[65536];
+extern unsigned char cycle_remap [256];
+extern const int alphamultiply [4096];
+extern PALSTRUCT objectivepal[256];
+
+// this class exists solely to take advantage of g++'s
+// -fvisibility-inlines-hidden option, so that these
+// methods can be inlined without any trace or complaint
+class Mix {
+public:
+//unsigned char MixColorAlpha (unsigned char fg,unsigned char bg,unsigned char alpha);
+//unsigned char MixColorAdditive (unsigned char fg,unsigned char bg,unsigned char alpha);
+	static unsigned char MixColorAlpha(unsigned char fg, unsigned char bg, unsigned char alpha, int use_objpal = 0) {
+		unsigned char rfg = cycle_remap[fg]; //Automatic remapping of palette slots.
+		//unsigned char rbg = cycle_remap [bg]; //Saves on typing elsewhere.
+		AGSColor *palette = engine->GetPalette();
+		int i = 0;
+		//int out_r = (palette[fg].r>>1) * alpha + (palette[bg].r>>1) * (255 - alpha);
+		//int out_g = palette[fg].g * alpha + palette[bg].g * (255 - alpha);
+		//int out_b = (palette[fg].b>>1) * alpha + (palette[bg].b>>1) * (255 - alpha);
+		int out_r, out_g, out_b;
+		if (use_objpal == 0) {
+			out_r = (objectivepal[rfg].r >> 1) *alpha + (palette[bg].r >> 1) *(255 - alpha);
+			out_g = objectivepal[rfg].g * alpha + palette[bg].g * (255 - alpha);
+			out_b = (objectivepal[rfg].b >> 1) *alpha + (palette[bg].b >> 1) *(255 - alpha);
+		} else {
+			out_r = (objectivepal[rfg].r >> 1) *alpha + (objectivepal[bg].r >> 1) *(255 - alpha);
+			out_g = objectivepal[rfg].g * alpha + objectivepal[bg].g * (255 - alpha);
+			out_b = (objectivepal[rfg].b >> 1) *alpha + (objectivepal[bg].b >> 1) *(255 - alpha);
+		}
+		//char ralpha = MAX(0,MIN(63,alpha>>2));
+		//unsigned char invralpha = 64-ralpha;
+		//if (ralpha > alpha) engine->AbortGame ("oops");
+		//int out_r = alphamultiply[((palette[fg].r>>1)<<6) +ralpha] + alphamultiply[((palette[bg].r>>1)<<6) +(invralpha)];
+		//int out_g = alphamultiply[((palette[fg].g)   <<6) +ralpha] + alphamultiply[((palette[bg].g)   <<6) +(invralpha)];
+		//int out_b = alphamultiply[((palette[fg].b>>1)<<6) +ralpha] + alphamultiply[((palette[bg].b>>1)<<6) +(invralpha)];
+		out_r = (out_r + 1 + (out_r >> 8)) >> 8;
+		out_g = (out_g + 1 + (out_g >> 8)) >> 8;
+		out_b = (out_b + 1 + (out_b >> 8)) >> 8;
+		//out_r = (out_r + 1 + (out_r >> 6)) >> 6;
+		//out_g = (out_g + 1 + (out_g >> 6)) >> 6;
+		//out_b = (out_b + 1 + (out_b >> 6)) >> 6;
+		i = ((out_r << 11) | (out_g << 5) | out_b);
+		unsigned char *clutp = clut;
+		//unsigned char result = cycle_remap [clut[i>>8][i%256]]; //Once again, to make sure that the palette slot used is the right one.
+		return cycle_remap[*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
+		//engine->ReleaseBitmapSurface (clutspr);
+	}
+
+	static unsigned char MixColorLightLevel(unsigned char fg, unsigned char intensity) {
+		unsigned char rfg = cycle_remap [fg]; //Automatic remapping of palette slots.
+		int i = 0;
+		//int dark_r = (((palette[fg].r>>1) * (intensity))>>8);
+		//int dark_b = (((palette[fg].b>>1) * (intensity))>>8);
+		//int dark_g = (((palette[fg].g)    * (intensity))>>8);
+		int dark_r = (((objectivepal[rfg].r >> 1) * (intensity)) >> 8);
+		int dark_b = (((objectivepal[rfg].b >> 1) * (intensity)) >> 8);
+		int dark_g = (((objectivepal[rfg].g)    * (intensity)) >> 8);
+		i = ((dark_r << 11) | (dark_g << 5) | dark_b);
+		unsigned char *clutp = clut;
+		return cycle_remap [*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
+	}
+
+	static unsigned char MixColorAdditive(unsigned char fg, unsigned char bg, unsigned char alpha, int use_objpal = 0) {
+		unsigned char rfg = cycle_remap[fg]; //Automatic remapping of palette slots.
+		//unsigned char rbg = cycle_remap[bg]; //Saves on typing elsewhere.
+		//BITMAP *clutspr = engine->GetSpriteGraphic (clutslot);
+		//if (!clutspr) engine->AbortGame ("MixColorAlpha: Can't load CLUT sprite into memory.");
+		//uint8 *clutarray = engine->GetRawBitmapSurface (clutspr);
+		AGSColor *palette = engine->GetPalette();
+		int i = 0;
+		int add_r, add_b, add_g = 0;
+		//char ralpha = MAX(0,MIN(63,alpha>>2));
+		//add_r = (((palette[fg].r>>1) * (alpha))>>8);
+		//add_b = (((palette[fg].b>>1) * (alpha))>>8);
+		//add_g = (((palette[fg].g)    * (alpha))>>8);
+		add_r = (((objectivepal[rfg].r >> 1) * (alpha)) >> 8);
+		add_b = (((objectivepal[rfg].b >> 1) * (alpha)) >> 8);
+		add_g = (((objectivepal[rfg].g)    * (alpha)) >> 8);
+		//int a_g = MAX(0,MIN(63,alpha>>2));
+		//add_r = ((alphamultiply[(palette[fg].r>>1)<<6)+ralpha])>>6);
+		//add_b = ((alphamultiply[(palette[fg].b>>1)<<6)+ralpha])>>6);
+		//add_g = ((alphamultiply[(palette[fg].g)   <<6)+ralpha])>>6);
+		//int out_r = MIN(31,(palette[bg].r>>1) + add_r);
+		//int out_g = MIN(63, palette[bg].g     + add_g);
+		//int out_b = MIN(31,(palette[bg].b>>1) + add_b);
+		int out_r, out_g, out_b;
+		if (use_objpal == 0) {
+			out_r = MIN(31, (palette[bg].r >> 1) + add_r);
+			out_g = MIN(63, palette[bg].g     + add_g);
+			out_b = MIN(31, (palette[bg].b >> 1) + add_b);
+		} else {
+			out_r = MIN(31, (objectivepal [bg].r >> 1) + add_r);
+			out_g = MIN(63, objectivepal [bg].g     + add_g);
+			out_b = MIN(31, (objectivepal [bg].b >> 1) + add_b);
+		}
+		i = ((out_r << 11) | (out_g << 5) | out_b);
+		unsigned char *clutp = clut;
+		unsigned char result = cycle_remap [*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
+		//unsigned char result = cycle_remap [clut[i>>8][i%256]]; //Once again, to make sure that the palette slot used is the right one.
+		//engine->ReleaseBitmapSurface (clutspr);
+		return result;
+	}
+
+	static unsigned char MixColorMultiply(unsigned char fg, unsigned char bg, unsigned char alpha, int use_objpal = 0) {
+		unsigned char rfg = cycle_remap [fg]; //Automatic remapping of palette slots.
+		unsigned char rbg = cycle_remap [bg]; //Saves on typing elsewhere.
+		AGSColor *palette = engine->GetPalette();
+		int i = 0;
+		int mul_r, mul_b, mul_g = 0;
+		int out_r, out_g, out_b = 0;
+		if (use_objpal == 0) {
+			mul_r = ((objectivepal[rfg].r >> 1) * (palette[rbg].r >> 1)) / 64;
+			mul_b = ((objectivepal[rfg].b >> 1) * (palette[rbg].b >> 1)) / 64;
+			mul_g = ((objectivepal[rfg].g * palette[rbg].g) / 64);
+			out_r = ((palette[rbg].r >> 1) * (63 - (alpha / 4)) + (mul_r * (alpha / 4))) / 63;
+			out_g = (palette[rbg].g * (63 - (alpha / 4)) + (mul_g * (alpha / 4))) / 63;
+			out_b = ((palette[rbg].b >> 1) * (63 - (alpha / 4)) + (mul_b * (alpha / 4))) / 63;
+		} else {
+			mul_r = ((objectivepal[rfg].r >> 1) * (objectivepal[rbg].r >> 1)) / 64;
+			mul_b = ((objectivepal[rfg].b >> 1) * (objectivepal[rbg].b >> 1)) / 64;
+			mul_g = ((objectivepal[rfg].g * objectivepal[rbg].g) / 64);
+
+			out_r = ((objectivepal[rbg].r >> 1) * (63 - (alpha / 4)) + (mul_r * (alpha / 4))) / 63;
+			out_g = (objectivepal[rbg].g * (63 - (alpha / 4)) + (mul_g * (alpha / 4))) / 63;
+			out_b = ((objectivepal[rbg].b >> 1) * (63 - (alpha / 4)) + (mul_b * (alpha / 4))) / 63;
+		}
+		i = ((out_r << 11) | (out_g << 5) | out_b);
+		unsigned char *clutp = clut;
+		unsigned char result = cycle_remap [*(clutp + i)]; //Once again, to make sure that the palette slot used is the right one.
+		//unsigned char result = cycle_remap [clut[i>>8][i%256]]; //Once again, to make sure that the palette slot used is the right one.
+		//engine->ReleaseBitmapSurface (clutspr);
+		return result;
+	}
+};
+
+void GetColor565(ScriptMethodParams &params);
+
+unsigned short root(unsigned short x);
+float FastSin(float x);
+float FastCos(float x);
+
+} // namespace AGSPalRender
+} // namespace Plugins
+} // namespace AGS3
+
+#endif

engines/ags/plugins/ags_pal_render/raycast.h

@@ -0,0 +1,108 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * of the License, or(at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef AGS_PLUGINS_AGS_PAL_RENDER_RAYCAST_H
+#define AGS_PLUGINS_AGS_PAL_RENDER_RAYCAST_H
+
+#include "ags/plugins/ags_pal_render/pal_render.h"
+
+namespace AGS3 {
+namespace Plugins {
+namespace AGSPalRender {
+
+#define MAP_WIDTH 64
+#define MAP_HEIGHT 64
+
+struct Sprite {
+	double x;
+	double y;
+	int texture;
+	byte alpha;
+	int blendmode;
+	double uDivW;
+	double uDivH;
+	double vMove;
+	double hMove;
+	int8 objectinteract;
+	int view;
+	int frame;
+	int angle;
+};
+
+struct wallType {
+	int texture[4];
+	int solid[4];
+	int ignorelighting[4];
+	int alpha[4];
+	int blendtype[4];
+	int mask[4];
+	byte hotspotinteract;
+};
+
+
+extern bool raycastOn;
+extern double posX;
+extern double posY; //x and y start position
+extern double dirX;
+extern double dirY; //initial direction vector
+extern double planeX;
+extern double planeY; //the 2d raycaster version of camera plane
+extern double moveSpeed; //the constant value is in squares/second
+extern double rotSpeed; //the constant value is in radians/second
+extern unsigned char worldMap[MAP_WIDTH][MAP_HEIGHT];
+extern unsigned char lightMap[MAP_WIDTH][MAP_HEIGHT];
+extern int ceilingMap[MAP_WIDTH][MAP_HEIGHT];
+extern int floorMap[MAP_WIDTH][MAP_HEIGHT];
+extern int heightMap[MAP_WIDTH][MAP_HEIGHT];
+extern unsigned char seenMap[MAP_WIDTH][MAP_HEIGHT];
+extern int textureSlot;
+extern int ambientlight;
+
+#define numSprites 256
+extern Sprite sprite[numSprites];
+
+
+#define texWidth 64
+#define texHeight 64
+#define MAX_TEXTURES 512
+extern unsigned char texture[][texWidth * texHeight];
+
+extern bool heightmapOn;
+
+
+extern wallType wallData[256];
+
+//arrays used to sort the sprites
+extern unsigned char **transcolorbuffer;
+extern unsigned char **transalphabuffer;
+extern double **transzbuffer;
+extern bool *transslicedrawn;
+extern int *transwallblendmode;
+extern double **ZBuffer;
+extern double *distTable;
+extern short *interactionmap;
+extern int skybox;
+
+} // namespace AGSPalRender
+} // namespace Plugins
+} // namespace AGS3
+
+#endif