Sonic Free Riders

Sonic Free Riders
Developer: Sonic Team Publisher: Sega Platform: Xbox 360 Released in JP: November 20, 2010 Released in US: November 4, 2010 Released in EU: November 10, 2010 Released in AU: November 18, 2010 This game has uncompiled source code. This game has hidden development-related text. This game has a prerelease article

Sonic Free Riders is the third and final entry in the Sonic Riders spin-off series, released as a launch title for the Xbox 360's Kinect peripheral. The game received largely negative reception due to unresponsive motion controls, but hey, at least it had a killer opening theme.

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Prerelease Info

Internal Project Name

The game is internally known as SRN, which can be found many times throughout the executable. "SRN" is likely an abbreviation for "Sonic Riders Natal", especially considering that "Natal" was the codename for the Kinect.

(Source: Original TCRF research)

Uncompiled Source Code

Present at 0x174358 in default.xex (decrypted & decompressed) is some assembly.

vs.1.1                            // ƒVƒF[ƒ_ ƒo[ƒWƒ‡ƒ“ 1.1           
mul r1,v2.zyxw,c0.wwww            // Geforce3 ‚Å UBYTE4 ‚ª‚È‚¢‚Ì‚ð•â‚¤ 
mov a0.x,r1.x                     // 1 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r4,v0,c[a0.x + 9]                                                 
m3x3 r5,v3,c[a0.x + 9]                                                 
mov r4.w,c0.x                     // À•W•ÏŠ·                          
m4x4 oPos,r4,c2                                                        
dp3 r5.w, r5, r5                  // –@ü‚Ì‹KŠi‰»                      
rsq r5.w, r5.w                                                         
mul r5, r5, r5.w                                                       
dp3 r1.x, r5, c1                  // ƒ‰ƒCƒeƒBƒ“ƒO                      
lit r1, r1                        //                                   
mul r0, r1.y, c8                  // •½sŒõŒ¹                          
add r0, r0, c7                    //  +ŠÂ‹«Œõ                          
min oD0, r0, c0.x                 // 1ˆÈ‰º‚ɃNƒ‰ƒ“ƒv                   
mov oD1, c0.zzzz                  // ‚·‚Ø‚«‚ã‚ç[‚ÌÝ’è                
mov oT0, v4                       // ƒeƒNƒXƒ`ƒƒ[À•W‚̃Rƒs[          
vs.1.1                            // ƒVƒF[ƒ_ ƒo[ƒWƒ‡ƒ“ 1.1           
mul r1,v2.zyxw,c0.wwww            // Geforce3 ‚Å UBYTE4 ‚ª‚È‚¢‚Ì‚ð•â‚¤ 
dp3 r0.w,v1.xyz,c0.xzz            // ÅŒã‚ÌŒW”‚̓EƒFƒCƒg‚̍‡Œv‚ª1‚©‚çŽZo 
add r0.w,-r0.w,c0.x                                                    
mov a0.x,r1.x                     // 1 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r4,v0,c[a0.x + 9]                                                 
m3x3 r5,v3,c[a0.x + 9]                                                 
mul r4,r4,v1.xxxx                 // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mul r5,r5,v1.xxxx                                                      
mov a0.x,r1.y                     // 2 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r2,v0,c[a0.x + 9]                                                 
m3x3 r3,v3,c[a0.x + 9]                                                 
mad r4,r2,r0.wwww,r4              // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mad r5,r3,r0.wwww,r5                                                   
mov r4.w,c0.x                     // À•W•ÏŠ·                          
m4x4 oPos,r4,c2                                                        
dp3 r5.w, r5, r5                  // –@ü‚Ì‹KŠi‰»                      
rsq r5.w, r5.w                                                         
mul r5, r5, r5.w                                                       
dp3 r1.x, r5, c1                  // ƒ‰ƒCƒeƒBƒ“ƒO                      
lit r1, r1                        //                                   
mul r0, r1.y, c8                  // •½sŒõŒ¹                          
add r0, r0, c7                    //  +ŠÂ‹«Œõ                          
min oD0, r0, c0.x                 // 1ˆÈ‰º‚ɃNƒ‰ƒ“ƒv                   
mov oD1, c0.zzzz                  // ‚·‚Ø‚«‚ã‚ç[‚ÌÝ’è                
mov oT0, v4                       // ƒeƒNƒXƒ`ƒƒ[À•W‚̃Rƒs[          
vs.1.1                            // ƒVƒF[ƒ_ ƒo[ƒWƒ‡ƒ“ 1.1           
mul r1,v2.zyxw,c0.wwww            // Geforce3 ‚Å UBYTE4 ‚ª‚È‚¢‚Ì‚ð•â‚¤ 
dp3 r0.w,v1.xyz,c0.xxz            // ÅŒã‚ÌŒW”‚̓EƒFƒCƒg‚̍‡Œv‚ª1‚©‚çŽZo 
add r0.w,-r0.w,c0.x                                                    
mov a0.x,r1.x                     // 1 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r4,v0,c[a0.x + 9]                                                 
m3x3 r5,v3,c[a0.x + 9]                                                 
mul r4,r4,v1.xxxx                 // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mul r5,r5,v1.xxxx                                                      
mov a0.x,r1.y                     // 2 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r2,v0,c[a0.x + 9]                                                 
m3x3 r3,v3,c[a0.x + 9]                                                 
mad r4,r2,v1.yyyy,r4              // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mad r5,r3,v1.yyyy,r5                                                   
mov a0.x,r1.z                     // 3 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r2,v0,c[a0.x + 9]                                                 
m3x3 r3,v3,c[a0.x + 9]                                                 
mad r4,r2,r0.wwww,r4              // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mad r5,r3,r0.wwww,r5                                                   
mov r4.w,c0.x                     // À•W•ÏŠ·                          
m4x4 oPos,r4,c2                                                        
dp3 r5.w, r5, r5                  // –@ü‚Ì‹KŠi‰»                      
rsq r5.w, r5.w                                                         
mul r5, r5, r5.w                                                       
dp3 r1.x, r5, c1                  // ƒ‰ƒCƒeƒBƒ“ƒO                      
lit r1, r1                        //                                   
mul r0, r1.y, c8                  // •½sŒõŒ¹                          
add r0, r0, c7                    //  +ŠÂ‹«Œõ                          
min oD0, r0, c0.x                 // 1ˆÈ‰º‚ɃNƒ‰ƒ“ƒv                   
mov oD1, c0.zzzz                  // ‚·‚Ø‚«‚ã‚ç[‚ÌÝ’è                
mov oT0, v4                       // ƒeƒNƒXƒ`ƒƒ[À•W‚̃Rƒs[          
dvs.1.1                            // ƒVƒF[ƒ_ ƒo[ƒWƒ‡ƒ“ 1.1           
mul r1,v2.zyxw,c0.wwww            // Geforce3 ‚Å UBYTE4 ‚ª‚È‚¢‚Ì‚ð•â‚¤ 
dp3 r0.w,v1.xyz,c0.xxx            // ÅŒã‚ÌŒW”‚̓EƒFƒCƒg‚̍‡Œv‚ª1‚©‚çŽZo 
add r0.w,-r0.w,c0.x                                                    
mov a0.x,r1.x                     // 1 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r4,v0,c[a0.x + 9]                                                 
m3x3 r5,v3,c[a0.x + 9]                                                 
mul r4,r4,v1.xxxx                 // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mul r5,r5,v1.xxxx                                                      
mov a0.x,r1.y                     // 2 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r2,v0,c[a0.x + 9]                                                 
m3x3 r3,v3,c[a0.x + 9]                                                 
mad r4,r2,v1.yyyy,r4              // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mad r5,r3,v1.yyyy,r5                                                   
mov a0.x,r1.z                     // 3 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r2,v0,c[a0.x + 9]                                                 
m3x3 r3,v3,c[a0.x + 9]                                                 
mad r4,r2,v1.zzzz,r4              // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mad r5,r3,v1.zzzz,r5                                                   
mov a0.x,r1.w                     // 4 ‚‚߂̍s—ñ‚ðÝ’è                
m4x3 r2,v0,c[a0.x + 9]                                                 
m3x3 r3,v3,c[a0.x + 9]                                                 
mad r4,r2,r0.wwww,r4              // ŒW”‚ð‚©‚¯‚臐¬‚·‚é              
mad r5,r3,r0.wwww,r5                                                   
mov r4.w,c0.x                     // À•W•ÏŠ·                          
m4x4 oPos,r4,c2                                                        
dp3 r5.w, r5, r5                  // –@ü‚Ì‹KŠi‰»                      
rsq r5.w, r5.w                                                         
mul r5, r5, r5.w                                                       
dp3 r1.x, r5, c1                  // ƒ‰ƒCƒeƒBƒ“ƒO                      
lit r1, r1                        //                                   
mul r0, r1.y, c8                  // •½sŒõŒ¹                          
add r0, r0, c7                    //  +ŠÂ‹«Œõ                          
min oD0, r0, c0.x                 // 1ˆÈ‰º‚ɃNƒ‰ƒ“ƒv                   
mov oD1, c0.zzzz                  // ‚·‚Ø‚«‚ã‚ç[‚ÌÝ’è                
mov oT0, v4                       // ƒeƒNƒXƒ`ƒƒ[À•W‚̃Rƒs[

(Source: Original TCRF research)