Atlas loading and testing.

common.mk

@@ -15,7 +15,9 @@ SEARCHPATH += src/entities/structures
 SEARCHPATH += src/entities/traps
 SEARCHPATH += src/game
 SEARCHPATH += src/hub
+SEARCHPATH += src/json
 SEARCHPATH += src/system
+SEARCHPATH += src/test
 SEARCHPATH += src/util 
 SEARCHPATH += src/widgets 
 SEARCHPATH += src/world
@@ -25,7 +27,7 @@ vpath %.h $(SEARCHPATH)
 
 DEPS += defs.h structs.h
 
-OBJS += atlas.o
+OBJS += atlas.o atlasTest.o
 OBJS += battery.o blaze.o bob.o boss.o blobBoss.o
 OBJS += camera.o cannon.o cardReader.o cell.o cherry.o combat.o consumable.o
 OBJS += debris.o destructable.o door.o draw.o
@@ -34,6 +36,7 @@ OBJS += fleshChunk.o frost.o
 OBJS += game.o
 OBJS += heart.o horizontalDoor.o horizontalLaserTrap.o hub.o hud.o
 OBJS += init.o infoPoint.o input.o io.o item.o items.o itemPad.o
+OBJS += cJSON.o
 OBJS += key.o keycard.o
 OBJS += laserTrap.o lift.o lookup.o
 OBJS += main.o map.o maths.o mia.o

src/main.c

@@ -91,5 +91,5 @@ static void handleCommandLine(int argc, const char *argv[])
 		
 	}
 	
-	initTitle();
+	initAtlasTest();
 }

src/main.h

@@ -28,6 +28,7 @@ extern void handleInput(void);
 extern void prepareScene(void);
 extern void presentScene(void);
 extern void initTitle(void);
+extern void initAtlasTest(void);
 
 App app;
 Camera camera;

src/system/atlas.c

@@ -22,13 +22,12 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 static void loadAtlasTexture(void);
 static void loadAtlasData(void);
+static void loadImageData(cJSON *root);
 
 static Atlas atlasHead;
 static Atlas *atlasTail;
-/*
+static Texture *atlasTexture;
-static Texture atlasTexture;
 static int atlasSize;
-*/
 
 void initAtlas(void)
 {
@@ -58,21 +57,50 @@ Atlas *getImageFromAtlas(char *filename)
 
 static void loadAtlasTexture(void)
 {
+	atlasTexture = getTexture("gfx/atlas/atlas.png");
 	
+	SDL_QueryTexture(atlasTexture->texture, NULL, NULL, &atlasSize, &atlasSize);
 }
 
 static void loadAtlasData(void)
 {
+	cJSON *root, *node;
+	char *text;
 	
-}
+	text = readFile("data/atlas/atlas.json");
 
-void loadImageData(cJSON *root)
+	root = cJSON_Parse(text);
+	
+	for (node = cJSON_GetObjectItem(root, "images")->child ; node != NULL ; node = node->next)
 	{
-	
+		loadImageData(node);
 	}
 	
-void createRectangle(char *filename, int x, int y, int w, int h)
+	cJSON_Delete(root);
+	
+	free(text);
+}
+
+static void loadImageData(cJSON *root)
 {
+	Atlas *atlas;
+	char *filename;
+	int x, y, w, h;
 	
+	filename = cJSON_GetObjectItem(root, "filename")->valuestring;
+	x = cJSON_GetObjectItem(root, "x")->valueint;
+	y = cJSON_GetObjectItem(root, "y")->valueint;
+	w = cJSON_GetObjectItem(root, "w")->valueint;
+	h = cJSON_GetObjectItem(root, "h")->valueint;
+	
+	atlas = malloc(sizeof(Atlas));
+	memset(atlas, 0, sizeof(Atlas));
+	atlasTail->next = atlas;
+	atlasTail = atlas;
+	
+	STRNCPY(atlas->filename, filename, MAX_FILENAME_LENGTH);
+	atlas->rect.x = x;
+	atlas->rect.y = y;
+	atlas->rect.w = w;
+	atlas->rect.h = h;
 }
-

src/system/atlas.h

@@ -20,3 +20,6 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 
 #include "../common.h"
 #include "../json/cJSON.h"
+
+extern Texture *getTexture(const char *filename);
+extern char *readFile(const char *filename);

src/system/draw.c

@@ -77,6 +77,24 @@ void blit(SDL_Texture *texture, int x, int y, int center)
 	SDL_RenderCopy(app.renderer, texture, NULL, &dstRect);
 }
 
+void blitRect(SDL_Texture *texture, int x, int y, SDL_Rect *srcRect, int center)
+{
+	SDL_Rect dstRect;
+	
+	dstRect.x = x;
+	dstRect.y = y;
+	dstRect.w = srcRect->w;
+	dstRect.h = srcRect->h;
+
+	if (center)
+	{
+		dstRect.x -= (dstRect.w / 2);
+		dstRect.y -= (dstRect.h / 2);
+	}
+
+	SDL_RenderCopy(app.renderer, texture, srcRect, &dstRect);
+}
+
 void blitFlip(SDL_Texture *texture, int x, int y, int center, SDL_RendererFlip flip)
 {
 	SDL_Rect dstRect;

src/system/init.c

@@ -69,7 +69,8 @@ void initGameSystem(void)
 	void (*initFuncs[]) (void) = {
 		initLookups,
 		initGraphics,
-		initFonts
+		initFonts,
+		initAtlas
 	};
 
 	numInitFuns = sizeof(initFuncs) / sizeof(void*);

src/system/init.h

@@ -28,6 +28,7 @@ extern void createSaveFolder(void);
 extern void initLookups(void);
 extern void initGraphics(void);
 extern void initFonts(void);
+extern void initAtlas(void);
 extern void destroyLookups(void);
 extern void destroyFonts(void);
 extern void destroyTextures(void);

src/system/textures.c

@@ -67,7 +67,6 @@ static Texture *loadTexture(const char *filename)
 	return addTextureToCache(filename, texture);
 }
 
-
 Texture *getTexture(const char *filename)
 {
 	Texture *t;

src/test/atlasTest.c

@@ -0,0 +1,46 @@
+/*
+Copyright (C) 2018 Parallel Realities
+
+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 2
+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, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#include "atlasTest.h"
+
+static void logic(void);
+static void draw(void);
+
+static Atlas *testImage;
+static Texture *atlasTexture;
+
+void initAtlasTest(void)
+{
+	app.delegate.logic = &logic;
+	app.delegate.draw = &draw;
+	
+	testImage = getImageFromAtlas("gfx/sprites/evilblobs/machineGunBlobRight1.png");
+	
+	atlasTexture = getTexture("gfx/atlas/atlas.png");
+}
+
+static void logic(void)
+{
+}
+
+static void draw(void)
+{
+	blitRect(atlasTexture->texture, 0, 0, &testImage->rect, 0);
+}

src/test/atlasTest.h

@@ -0,0 +1,29 @@
+/*
+Copyright (C) 2018 Parallel Realities
+
+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 2
+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, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#include "../common.h"
+
+extern Atlas *getImageFromAtlas(char *filename);
+extern Texture *getTexture(const char *filename);
+extern void blit(SDL_Texture *texture, int x, int y, int center);
+extern void blitRect(SDL_Texture *texture, int x, int y, SDL_Rect *srcRect, int center);
+extern void drawLine(int x1, int y1, int x2, int y2, int r, int g, int b, int a);
+
+extern App app;

src/util/util.h

@@ -19,4 +19,3 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "../common.h"
-

src/world/particles.c

@@ -114,7 +114,6 @@ void addFlameParticles(float x, float y)
 	p->destroyAfterAnim = 1;
 }
 
-
 void addExplosionParticles(float x, float y, float radius, int amount)
 {
 	int i;

src/world/player.h

@@ -19,4 +19,3 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
 
 #include "../common.h"
-