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authorStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
committerStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
commit9cd57b731ab1c666d4a1cb725538fdc137763d12 (patch)
tree5bac45ae5157a1cb10c6e45500cbf72789917980 /libs/cocos2d/CCParticleSystemPoint.m
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Initial commit (version 0.2.1)
Diffstat (limited to 'libs/cocos2d/CCParticleSystemPoint.m')
-rwxr-xr-xlibs/cocos2d/CCParticleSystemPoint.m211
1 files changed, 211 insertions, 0 deletions
diff --git a/libs/cocos2d/CCParticleSystemPoint.m b/libs/cocos2d/CCParticleSystemPoint.m new file mode 100755 index 0000000..0894d2b --- /dev/null +++ b/libs/cocos2d/CCParticleSystemPoint.m
@@ -0,0 +1,211 @@
1/*
2 * cocos2d for iPhone: http://www.cocos2d-iphone.org
3 *
4 * Copyright (c) 2008-2010 Ricardo Quesada
5 * Copyright (c) 2011 Zynga Inc.
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 *
25 */
26
27#import <Availability.h>
28#import "CCParticleSystemPoint.h"
29
30#ifdef __IPHONE_OS_VERSION_MAX_ALLOWED
31
32// opengl
33#import "Platforms/CCGL.h"
34
35// cocos2d
36#import "CCTextureCache.h"
37#import "ccMacros.h"
38
39// support
40#import "Support/OpenGL_Internal.h"
41#import "Support/CGPointExtension.h"
42
43@implementation CCParticleSystemPoint
44
45-(id) initWithTotalParticles:(NSUInteger) numberOfParticles
46{
47 if( (self=[super initWithTotalParticles:numberOfParticles]) ) {
48
49 vertices = malloc( sizeof(ccPointSprite) * totalParticles );
50
51 if( ! vertices ) {
52 NSLog(@"cocos2d: Particle system: not enough memory");
53 [self release];
54 return nil;
55 }
56
57#if CC_USES_VBO
58 glGenBuffers(1, &verticesID);
59
60 // initial binding
61 glBindBuffer(GL_ARRAY_BUFFER, verticesID);
62 glBufferData(GL_ARRAY_BUFFER, sizeof(ccPointSprite)*totalParticles, vertices, GL_DYNAMIC_DRAW);
63 glBindBuffer(GL_ARRAY_BUFFER, 0);
64#endif
65 }
66
67 return self;
68}
69
70-(void) dealloc
71{
72 free(vertices);
73#if CC_USES_VBO
74 glDeleteBuffers(1, &verticesID);
75#endif
76
77 [super dealloc];
78}
79
80-(void) updateQuadWithParticle:(tCCParticle*)p newPosition:(CGPoint)newPos
81{
82 // place vertices and colos in array
83 vertices[particleIdx].pos = (ccVertex2F) {newPos.x, newPos.y};
84 vertices[particleIdx].size = p->size;
85 ccColor4B color = { p->color.r*255, p->color.g*255, p->color.b*255, p->color.a*255 };
86 vertices[particleIdx].color = color;
87}
88
89-(void) postStep
90{
91#if CC_USES_VBO
92 glBindBuffer(GL_ARRAY_BUFFER, verticesID);
93 glBufferSubData(GL_ARRAY_BUFFER, 0, sizeof(ccPointSprite)*particleCount, vertices);
94 glBindBuffer(GL_ARRAY_BUFFER, 0);
95#endif
96}
97
98-(void) draw
99{
100 [super draw];
101
102 if (particleIdx==0)
103 return;
104
105 // Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
106 // Needed states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY
107 // Unneeded states: GL_TEXTURE_COORD_ARRAY
108 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
109
110 glBindTexture(GL_TEXTURE_2D, texture_.name);
111
112 glEnable(GL_POINT_SPRITE_OES);
113 glTexEnvi( GL_POINT_SPRITE_OES, GL_COORD_REPLACE_OES, GL_TRUE );
114
115#define kPointSize sizeof(vertices[0])
116
117#if CC_USES_VBO
118 glBindBuffer(GL_ARRAY_BUFFER, verticesID);
119
120 glVertexPointer(2,GL_FLOAT, kPointSize, 0);
121
122 glColorPointer(4, GL_UNSIGNED_BYTE, kPointSize, (GLvoid*) offsetof(ccPointSprite, color) );
123
124 glEnableClientState(GL_POINT_SIZE_ARRAY_OES);
125 glPointSizePointerOES(GL_FLOAT, kPointSize, (GLvoid*) offsetof(ccPointSprite, size) );
126#else // Uses Vertex Array List
127 int offset = (int)vertices;
128 glVertexPointer(2,GL_FLOAT, kPointSize, (GLvoid*) offset);
129
130 int diff = offsetof(ccPointSprite, color);
131 glColorPointer(4, GL_UNSIGNED_BYTE, kPointSize, (GLvoid*) (offset+diff));
132
133 glEnableClientState(GL_POINT_SIZE_ARRAY_OES);
134 diff = offsetof(ccPointSprite, size);
135 glPointSizePointerOES(GL_FLOAT, kPointSize, (GLvoid*) (offset+diff));
136#endif
137
138 BOOL newBlend = blendFunc_.src != CC_BLEND_SRC || blendFunc_.dst != CC_BLEND_DST;
139 if( newBlend )
140 glBlendFunc( blendFunc_.src, blendFunc_.dst );
141
142
143 glDrawArrays(GL_POINTS, 0, particleIdx);
144
145 // restore blend state
146 if( newBlend )
147 glBlendFunc( CC_BLEND_SRC, CC_BLEND_DST);
148
149
150#if CC_USES_VBO
151 // unbind VBO buffer
152 glBindBuffer(GL_ARRAY_BUFFER, 0);
153#endif
154
155 glDisableClientState(GL_POINT_SIZE_ARRAY_OES);
156 glDisable(GL_POINT_SPRITE_OES);
157
158 // restore GL default state
159 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
160}
161
162#pragma mark Non supported properties
163
164//
165// SPIN IS NOT SUPPORTED
166//
167-(void) setStartSpin:(float)a
168{
169 NSAssert(a == 0, @"PointParticleSystem doesn't support spinning");
170 [super setStartSpin:a];
171}
172-(void) setStartSpinVar:(float)a
173{
174 NSAssert(a == 0, @"PointParticleSystem doesn't support spinning");
175 [super setStartSpin:a];
176}
177-(void) setEndSpin:(float)a
178{
179 NSAssert(a == 0, @"PointParticleSystem doesn't support spinning");
180 [super setStartSpin:a];
181}
182-(void) setEndSpinVar:(float)a
183{
184 NSAssert(a == 0, @"PointParticleSystem doesn't support spinning");
185 [super setStartSpin:a];
186}
187
188//
189// SIZE > 64 IS NOT SUPPORTED
190//
191-(void) setStartSize:(float)size
192{
193 NSAssert(size >= 0 && size <= CC_MAX_PARTICLE_SIZE, @"PointParticleSystem only supports 0 <= size <= 64");
194 [super setStartSize:size];
195}
196
197-(void) setEndSize:(float)size
198{
199 NSAssert( (size == kCCParticleStartSizeEqualToEndSize) ||
200 ( size >= 0 && size <= CC_MAX_PARTICLE_SIZE), @"PointParticleSystem only supports 0 <= size <= 64");
201 [super setEndSize:size];
202}
203@end
204
205#elif defined(__MAC_OS_X_VERSION_MAX_ALLOWED)
206@implementation CCParticleSystemPoint
207@end
208
209#endif // __MAC_OS_X_VERSION_MAX_ALLOWED
210
211